Instruction/ maintenance manual of the product DuraStor 7220SS Adaptec
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Adaptec Disk Array Administrator User’ s Guide.
ii Copyr ight © 200 1 Adaptec , Inc. All right s r eser ved. No part o f thi s public atio n may b e re prod uced, sto r ed in a r et rieval system, or trans mitted i n any form or by any mean s, el ectronic, m ec hanic al, p hotoc opying , reco rding o r oth erwise , wit hout the prior writ ten con sent of A daptec , Inc .
iii Contents 1 Getting Started About This G uide 1-1 Gett ing O nline Help 1-2 Accessing Ad aptec Disk Array Adm inistrator 1-2 The Adaptec Disk Array Ad ministrator Screen 1 -4 Navigatin g Adaptec Di.
iv Cont ents 3 Mon itorin g System Status Displa ying the Even t Log 3-1 Viewing the Most Recen t Event 3-3 Viewing One Event at a Time 3-3 Viewing a Whole Screen of Even ts 3-3 Capturin g the Event L.
v Cont ents Disab ling SCSI Ch annel 3 5-1 4 Changin g the Sample Rate 5-15 Understand ing the Audi ble Alarm 5-16 Changing the Alarm M ute Setting 5-16 Locking the Cache 5-17 Configuring th e Battery.
vi Cont ents Warning and Err or Events 7-8 Warnings 7- 8 Errors 7-9 Using the L oader Diagn ostics Me nu 7-10 Using the Loa der Utility Menu 7-11 Understanding SCSI Errors 7-11 Disk Errors 7-11 Disk C.
1-1 1 Getting Started In This Chapt er Adaptec Disk Array Administrator TM is a utility that manages th e storage devices connected to your DuraSto r RAID contr ollers. It is embedded in the firmwar e o f the contro ller , an d can be used with any Op erating S ystem (OS).
1-2 Gett ing S tar ted Getting Online He lp Online He lp is availa ble at any time from the Help menu. Y ou can also press F1 or sel ect Help in a dialog box to d isplay On line Help specific to wher e you ar e o n-scr een.
1-3 Gett ing S tar ted T o access Adaptec Di sk Arr ay Admini stra tor 1 On the I/O connectivity panel of the DuraStor 6 200SR, turn the switch to E XT . 2 On the DuraStor 62 00SR O perator Contr ol Panel, use the arr ow button s to a Choose Hard ware Me nu , then pr ess Ente r .
1-4 Gett ing S tar ted The Adaptec Disk Arr a y Admini strat or Sc reen Figure 1-1 show s the Syst em M enu screen. Al l othe r menus are ac cess ed f r om th is scr een and hav e a simi lar app eara nce.
1-5 Gett ing S tar ted Note: Af ter 4 minutes of ina ctivity , Adaptec Di sk Array Administrato r times out and returns to the System Menu scr een. Changin g the Scre en Displ ay After you have accessed Adaptec D isk Array Administrator , you can chang e the screen display using a combinati on of keystrokes , as shown on the System Menu.
2-1 2 Cr eating and Managing Arrays and Partitions In This Chapt er Creati ng Arra ys Y ou can cr eate an array at a ny time. Ta b l e 2 - 1 descri bes the disk drive r equir ements for each RAID level.
2-2 Creat ing an d Mana ging Arra ys and P ar titio ns Note: Before you cr eate mor e th an one array , you must be sure that your host OS supports multipl e Logical Uni t Numbers (LUNs). Mo st OSs do, or can be enabled to. If yours does not, the host sees o nly one array at LUN 0.
2-3 Creat ing an d Mana ging Arra ys and P ar titio ns If you want to cr eate a multiple-partition arra y , see Cr eat ing a Multiple- Partition Ar ray on page 2- 6 . 3 Select Ye s to create a single-partiti on array and press Ente r . The LUN pr ompt appears.
2-4 Creat ing an d Mana ging Arra ys and P ar titio ns If you selected any array typ e other than RAID 50, the Num ber of Drives pr ompt appears. 6 T ype the number of disk drives (excluding spar es) you want in the array and pr ess Enter . Th e Se le ct D ri ve( s ) m enu ap pe ars .
2-5 Creat ing an d Mana ging Arra ys and P ar titio ns 9 Select a di sk drive to use as a dedicated spar e and pres s Enter . Only ava ilable disk drives (those that are not members o f an array an d ar e not a ssigned as dedicated or po ol spar es ) displ ay .
2-6 Creat ing an d Mana ging Arra ys and P ar titio ns Note: M ost OSs, such as W indow s NT 4. 0, require you to r eboot the host sy stem to see the new array . NetW a r e v3.12 and lat er can recognize new d evices if you type th e command SCAN FOR NEW DEVICES at the console pr ompt.
2-7 Creat ing an d Mana ging Arra ys and P ar titio ns Note: A R AID 10 array is automaticall y created when there ar e mor e than two disk drives in a mirr or ed array .
2-8 Creat ing an d Mana ging Arra ys and P ar titio ns 7 T ype the number of spar es you want to add and pr ess Ent er . This creates dedicate d spares that can on ly be used by this array . A dedic ated spar e dis k drive wil l not be ava ilable for a ny other use.
2-9 Creat ing an d Mana ging Arra ys and P ar titio ns If you need to change the disk drives or some other arra y configura tion, you can stop the arra y initializ ation process. See Stopping the Arr ay Initialization Process on pag e 2- 13 Note: M ost OSs, such as W indow s NT 4.
2-10 Creat ing an d Mana ging Arra ys and P ar titio ns T o add a partit ion: 1 Fr om the System Menu, s elect A rray Men u and press Enter . The Select Array me nu appears. 2 Select the mu ltiple-partiti on array you want and press Ent er . Th at ar ray ’s Arra y m enu a ppe ars .
2-11 Creat ing an d Mana ging Arra ys and P ar titio ns Viewing Arra y and Disk Driv e Status Informatio n Y ou can view a rray s tatus and di sk drive s tatu s at an y time. Vie wing Array Status Y ou ca n view the foll owing informat ion for an y array: ■ State —Online, O f fline, Crit ical, o r Fa ult-toleran t.
2-12 Creat ing an d Mana ging Arra ys and P ar titio ns T o view the status of an ar ray: 1 Fr om the System Menu, s elect A rray Men u and press Enter . The Select Array me nu appears. 2 Select the array yo u want and press Ente r . Th at ar ray ’s Arra y m enu a ppe ars .
2-13 Creat ing an d Mana ging Arra ys and P ar titio ns 3 Select Driv e Status and press Enter . The Display D rives menu appears s howing th e disk drives that ar e members of th e array an d that ar e assigned as dedicated spares. Use the ↑ or ↓ key to scr oll through the disk drives .
2-14 Creat ing an d Mana ging Arra ys and P ar titio ns T o v erif y an array: 1 Fr om the System Menu, s elect A rray Men u and press Enter . The Select Array me nu appears. 2 Select the array yo u want and press Ente r . Th at ar ray ’s Arra y m enu a ppe ars .
2-15 Creat ing an d Mana ging Arra ys and P ar titio ns 5 Pr ess Esc to return to the V erify Funct ion menu . Stopping the V erification Y ou ca n stop the verifica tion process. Normally , y ou should let the verification finis h, although stopping it d oes no t cause an y damage to your data.
2-16 Creat ing an d Mana ging Arra ys and P ar titio ns Expanding Ar ray Capacity Y ou ca n expand array capacity wi thout stoppin g I/O activity . Y ou can only expa nd one array at a time.
2-17 Creat ing an d Mana ging Arra ys and P ar titio ns T o expand an arra y: 1 Fr om the System Menu, s elect A rray Men u and press Enter . The Select Array me nu appears. 2 Select the array yo u want and press Ente r . Th at ar ray ’s Arra y m enu a ppe ars .
2-18 Creat ing an d Mana ging Arra ys and P ar titio ns 2 Select the array yo u want and press Ente r . Th at ar ray ’s Arra y m enu a ppe ars . 3 Select Expan d Function and p ress Enter . That array’s Expand menu appears. 4 Select V iew Expand Sta tus and press Ente r .
2-19 Creat ing an d Mana ging Arra ys and P ar titio ns contr oller you change it to. Y ou can no longer see the array on the original co ntroller . Note: W hen you change the ownership of an array , the LUNs assigned to the array’s partitions become invalid.
2-20 Creat ing an d Mana ging Arra ys and P ar titio ns ■ An array is of fli ne because a disk dr ive is failing, you have no data backup, and you want to try to recover the data fr om the array . (Onl y a non-fa ult tolerant a rray will g o offline when a singl e disk drive fails.
2-21 Creat ing an d Mana ging Arra ys and P ar titio ns 9 Select Ye s a nd press Enter . The array will be back online Note: If the array does not come back online, too man y members may be offline or th e array may h ave additional failur es on the bus or enclosur e that T rust Array Function cannot fix.
2-22 Creat ing an d Mana ging Arra ys and P ar titio ns Mana ging P ar tition s Using A daptec Disk Array Admini strator you ca n manage partitio ns by ■ V iewing pa rtition st atus info rmation. See page 2-24 . ■ Adding a partition. See page 2-9 .
2-23 Creat ing an d Mana ging Arra ys and P ar titio ns When you create a partitio n, you set the size o f the partition . Figure 2-2 show s a singl e partit ion. Figu re 2-2 Arr a y After Cre ating One P ar tition Disk Array Administrator a ssigns each partition a unique serial number and sequence nu mber .
2-24 Creat ing an d Mana ging Arra ys and P ar titio ns Aft er ex pand ing an arra y , you ca n eit her a dd a part itio n or expand the last partition to use the new fr ee space. Y o u can also delete one or mor e partitions and expand a partition into the space.
2-25 Creat ing an d Mana ging Arra ys and P ar titio ns T o view the status of a partition: 1 Display the P artition Menu. (See Ta b l e 2 - 3 ): The Partition Menu screen appears. 2 Select Par tition Status an d pr ess Ent er . That partiti on’s Pa rtition Sta tus windo w appears.
2-26 Creat ing an d Mana ging Arra ys and P ar titio ns Simi lar stati stics are also ava ilable o n an aggregat e basis fo r all partitio n LUNs. See Displaying Overall Statistics on p age 3 -7 . T o view the partition sta tistics: 1 Display the P artition Menu.
2-27 Creat ing an d Mana ging Arra ys and P ar titio ns T o r eset partitio n stati stics: 1 Display the P artition Menu. See Ste p 1 on p age 2-25 for instruction s. 2 Select Partiti on Statistics a nd press Enter . The Statistics menu appears. 3 Select Reset Stat istics and press Enter .
2-28 Creat ing an d Mana ging Arra ys and P ar titio ns T o change a partition name: 1 Display the P artition Menu. See Ste p 1 on p age 2-25 for instruction s. 2 Select Change Pa rtition Name an d pre ss Ent er . The Enter New Name pr ompt appears. 3 T ype the name you wan t to use and pr ess Ent er .
2-29 Creat ing an d Mana ging Arra ys and P ar titio ns Deleti ng a P ar tit ion Y ou can delete a partition when you no longer need it a nd you want to use the space for an other purpose. Caution: Deleting a partitio n deletes all dat a contained in the partition.
3-1 3 Monitoring System Status In This Chapt er Y ou can monitor your system regularly to ensure that the controller , disk drives, and arra ys are working properly by: ■ Displayin g the event log. See page 3-1 . ■ V iewing ha rdware and config uration informa tion.
3-2 Monitorin g System Status Below is a list of some of the key warni ng and fa ilure events included in the event log during operation: ■ Disk detected err or ■ Disk channel err or ■ Battery f.
3-3 Monitorin g System Status Viewing the Most Recent Even t The most r ecent voltage or temperatur e event displays in r o tation with the date and time whenever th e Adaptec Disk Array Administrato r times out and returns to the System Menu. Viewing One Event at a Time Y ou can view controller -r elated events one at a time.
3-4 Monitorin g System Status Capturin g the Event Log File The entir e event log can be saved to a file, which is useful if you want to print the log or attach it to an email message. These instructio ns assume that you are using HyperT erm inal as the terminal emulator softwar e.
3-5 Monitorin g System Status T able 3-1 Conf igura tio n Inf ormation Gr oup Field What Displays HOST Enabled Field is just a plac eholder . SE/L VD Neg otia tion rat e. T ar get ID SCSI ID of cont r oller a s set in Adapte c Disk Array Admini strat or .
3-6 Monitorin g System Status T o display ha rdware informa tion on ly: 1 Fr om the System Menu, s elect Utilities Menu and pr ess Enter . The Utilities m enu appears. 2 Select Hard ware In form atio n and pre ss Ent er . The Har d war e I nfo rmati on w indo w ap pears .
3-7 Monitorin g System Status Displa ying Ove rall St atis tics Aggregate stat isti cs for all parti tion LUN s can be displa yed in two format s: ■ List of genera l statistics. (Sim ilar statis tics are also available for individua l partition LU Ns.
3-8 Monitorin g System Status These stati stics can help yo u interpret performance based on individual system configurations and OSs. They can be used to pr of ile appli ca tions and th eir partit ion usage, and an alyz e what type of RAID level is applicable to you r needs.
3-9 Monitorin g System Status Resett ing Overal l Stati stics Y ou can reset all of the overall statistics back to zero , which you may want to do if you ar e monitoring performance. Note: Re setting overall statistics also resets the sta tistics for each individual partition.
4-1 4 Managing Spar es In This Chapt er DuraStor RA ID controllers automatica lly reconstruct r edundant (fault-toleran t) arrays (RAID 3, RAID 4, RAID 5, RAID 50, and mirror ed) if an array becom es critic al and a proper-size spare disk drive is available.
4-2 Mana ging Spare s Mana ging Dedi cated Spares Dedicated spar es a re unused disk drives that you assign as a s par e to a specific arr ay . Each disk drive must be as lar ge as the smallest member of the a rray . Y ou cannot use a dedicated spar e in an array or as a pool spar e.
4-3 Mana ging Spare s Note: If a disk drive w as a member of an array and wa s r emoved fr om that array , you cannot use it as a spar e until you clear the its metadata. For mor e information, see Clearing Metadat a fr om a Disk Dr ive on pag e 6-3 .
4-4 Mana ging Spare s W i th Dynamic Spar es enabled, if you have spar es or available drives, th e contr oller fi rst looks fo r a dedicated o r spar e pool drive for the r econstruction. If none is found, it use s an available drive, which it automati cally as signs a s a spare and st arts reconstruction.
4-5 Mana ging Spare s Mana ging the S par e P ool Disk drives in the spare pool ar e available for the reconstr uction of r edundan t arrays. On ce you assign a disk drive to the spare pool, it is no t ava ilable for use as an ar ray me mber or a s a ded icat ed spar e.
4-6 Mana ging Spare s Displaying the S pare P o ol Y ou can display a list of all of th e pool sp ares. T o displa y th e spare p ool: 1 Fr om the System Menu, s elect Pool Spare Menu and p ress Enter . The Pool Spar e menu appears. 2 Select Display Pool Spa re and press Enter .
5-1 5 Configuring the Contr oller In This Chapt er Rebooti ng the Controlle r 5-2 Changi ng the Da te and Ti me 5-2 Configu r ing th e Host C hannel s 5-3 Understa nding LUNs an d Viewing LU N Inf or .
5-2 Co nfigur i ng t he Con tr oller Reboot ing the Contr ol ler Y ou may need to shut down and r estart the contr oller after you make certain co nfiguration ch anges or when you move the co ntr oller o r ma ke ha r dwa r e c han ges .
5-3 Co nfigur i ng t he Con tr oller 3 Select Set Date and press Enter . The Set Date pr ompt appears. 4 T y pe the date using this format: mm/dd/yyyy . Press Enter . The system confirms that you want to make the change. 5 Select Ye s a nd press Enter to make the change.
5-4 Co nfigur i ng t he Con tr oller T able 5-1 Ho st Chan nel S ettings Host Channel Setting Modes A v ailable Description Enab le/ Disable Stan d-al one singl e-port Y ou sh ould n ot disa ble the host c hannel when in sing le-port mod e.
5-5 Co nfigur i ng t he Con tr oller T o co nfigure the host channels: 1 Fr om the System Menu, s elect Configuration Menu and press Enter . The Conf igurati on m enu app ears. 2 Select Host Conf iguration and pr ess En t er . If the controller is in stan d-alone dual -port mod e, the Channe l menu appears.
5-6 Co nfigur i ng t he Con tr oller ■ SEP LUNs —Allow acces s to SEPs. A SEP LUN may be set to a value between 0 and 6 3 or None. None means that th e SEP cannot be accessed via a LUN. For information about changing the SEP LUN, see Changing the SEP LUN on pag e 6- 8 .
5-7 Co nfigur i ng t he Con tr oller ■ Initiato r ID —SCSI ID assigned to each chan nel of the con troller . The defa ult ID is 6 for Chann el 1 and 7 for Channel 2. Y ou may need to chan ge the initiato r ID if the default conflicts wit h a SEP ID.
5-8 Co nfigur i ng t he Con tr oller Under st anding Operat ing Modes Y our controller can ope rate in thr ee dif fer ent modes: ■ Active-act ive —T wo controllers cooperate in s ystem operation in a fault-tolerant manner .
5-9 Co nfigur i ng t he Con tr oller of the Adaptec Disk Array Adm inistrator scr een s. Contr oller 1 and 2 may als o be refe rred to a s Con trolle r A an d B, re s p e c t i v e l y . ■ Failback —Th e act of returning ow nership of con troller r esources from a surviving con tr oller to a previously fail ed (but now active) contr oller .
5-10 Co nfigur i ng t he Con tr oller Active- Activ e Operat io n Scenari os Y ou s hould understan d how the controllers act in differ ent active- active scenarios. ■ Dual B oot —When both controllers boot at the same time, they exchange information related to their current configurat ion an d the ownershi p of resource s.
5-11 Co nfigur i ng t he Con tr oller 4 Select the o ption you want and pr ess Ent er . The system confirms that you want to make the change. 5 Select Ye s a nd press Enter to make the change. The system confirms that the chan ge is made. 6 Pr ess Esc to return to the Opti on Config uration menu.
5-12 Co nfigur i ng t he Con tr oller 2 Select Oth er Inf orma tion an d pr ess Ent er . The O ther Inf orma tio n window app ears. 3 Pr ess Esc to return to the Oth er Controller menu . Shutting Down the Ot her Co ntroller Y ou ca n gracefully shut down the ot her controller if you ar e pr eparing to r eplace it or power off the RAID appliance.
5-13 Co nfigur i ng t he Con tr oller 2 Select Shutdow n Both and press Enter . The system confirms that you want to make the change. 3 Select Ye s a nd press Enter to make the change. Both contr ollers shut down. 4 Pr ess Esc to return to the Oth er Controller menu .
5-14 Co nfigur i ng t he Con tr oller Note: If th e other contr oller was un plugged then plugg ed back in or r eplaced by a differ ent contr oller , the survivi ng controller will au tomatica lly unkil l the other controller . T o unkill the o ther co ntroller: 1 Fr om the System Menu, s elect Other Controller Menu an d pr ess Enter .
5-15 Co nfigur i ng t he Con tr oller Note: The controller will not boot if you disable SCSI channel 3 while in active-active mode. Y ou must change your operat ing mode before disab ling SCSI channel 3 . T o disable SCSI channel 3: 1 Fr om the System Menu, s elect Shutdown/Restart and press Enter .
5-16 Co nfigur i ng t he Con tr oller 2 Select New Sample Rate and press Enter . The New Sample Rate pr ompt appears. 3 T ype the sample rate and pr ess Enter .
5-17 Co nfigur i ng t he Con tr oller Loc king the Cac he Some host OSs disable the write-back cache of the contr oller , r esultin g in degraded perfo rmance. Y ou can stop this f r om happening by enabling the Cache Lo ck. (The default setting is Disab led .
5-18 Co nfigur i ng t he Con tr oller 2 Select Option Configurati on and press Enter . The Option Con figuration m enu appears. 3 Select Cache L ock and press Enter . The Cache Lock menu appears . The curr ent setting is marked with an * n ext to it. 4 Select the o ption you want and pr ess Ent er .
5-19 Co nfigur i ng t he Con tr oller 3 Select Bat tery and press Enter . The Battery menu appears. The curr ent setting is marked with an * nex t to it. 4 Select the o ption you want and pr ess Ent er . Y ou must reboot the contr oller for the change to take ef fect.
5-20 Co nfigur i ng t he Con tr oller 4 While the controller reboots, ho ld down the Spaceba r on your keyboa r d. Th e F las h Ut ili ty scre en app ea rs. 5 Pr ess 6 fo r the Utility menu. The Utility m enu appears . 6 Pr ess 4 fo r Battery Life Moni tor Options.
5-21 Co nfigur i ng t he Con tr oller ■ Low —Use if streaming data without interruption, such as for a W eb server , is more important tha n data redundancy .
5-22 Co nfigur i ng t he Con tr oller P ausing I/O The Dura Stor 312R s tora ge enclo sur e allows hot-sw apping (removing and replacing disk drives whi le SCSI bus activi ty continues). The Hot Swap Pause Function suspends activity on all device channe ls used in the controller and protects data integrit y on the connected disk drive s and arrays.
5-23 Co nfigur i ng t he Con tr oller Resto ring Def ault Sett ings Y ou ca n restore all of the controller ’s defa ult setting s and cha nge those that ar e critical to your configuration. Y ou may want to do this if the con tr oller is not w orking properly and you cann ot determine why .
6-1 6 Managing Disk Drives and Enclosur es In This Chapt er Mana ging Dis k Drives Using A daptec D isk Ar ray Admin istrato r , you can control a variety of function s related to disk drives. Y ou should also refer to your disk dri ve documenta tion and the DuraStor Installation and Use r ’ s Guide f or information about related functions.
6-2 Managing Disk Driv es and Enclosures Displa ying All Disk Drives Y ou ca n display this inf ormatio n for all d isk drives conn ected to the controller: ■ Channel nu mber ■ SCSI target ID numb.
6-3 Managing Disk Driv es and Enclosures Clearin g Metadat a from a Disk Drive All member di sk drives in an array conta in metada ta, which is used to i dentify array members after a controller is changed or re s t a r t e d . If you have a d isk drive that was pr eviously a member of an array , you can clear its metadata.
6-4 Managing Disk Driv es and Enclosures T o ch ange the w rite-back cache settin g: 1 Fr om the System Menu, s elect Configuration Menu and press Enter . The Conf igurati on m enu app ears. 2 Select Disk Config uration and pr ess Enter . The Disk Configurat ion men u appears.
6-5 Managing Disk Driv es and Enclosures Enabling a nd Disabling SMART Chang es Y ou ca n enable or disabl e the ability to change the Self -Monitoring Analys is and Reportin g T echn ology (SM AR T ) settings for all disk drives connected to the contr oller .
6-6 Managing Disk Driv es and Enclosures T o blink a disk dr ive LED: 1 Fr om the System Menu, s elect Utilities Menu and pr ess Enter . The Utilities m enu appears. 2 Select Driv e Utilit ies Menu and pr ess Enter . The Drive Utiliti es menu appea rs.
6-7 Managing Disk Driv es and Enclosures T o take down a disk drive : 1 Fr om the System Menu, s elect Utilities Menu and pr ess Enter . The Utilities M enu appea rs. 2 Select Driv e Utilit ies Menu and pr ess Enter . The Drive Utiliti es Menu a ppears.
6-8 Managing Disk Driv es and Enclosures Mana ging SAF-TE Enc losu res An SEP is a SCSI device fr om which the RAID contro ller can inquir e about envir onmental conditions such as temperatur e, power supply and fan status, an d the pres ence or absence of dis k drives.
6-9 Managing Disk Driv es and Enclosures 5 Select the option or n umber you want to use. See Ta b l e 6 - 1 for option s. The system confirms that you want to make the change.
6-10 Managing Disk Driv es and Enclosures T o change th e SEP setting s: 1 Fr om the System Menu, s elect Configuration Menu and press Enter . The Conf igurati on m enu app ears. 2 Select SEP Confi guratio n and pr ess Enter . The SE P Conf iguratio n menu a ppear s.
7-1 7 T r oubleshooting In This Chapt er Adapt ec T echni cal Suppo r t For assista nce configu ring and using your Adap tec pr oduct, contact your authorized d istribu tor or Ada ptec technical support at: 1 321- 207- 2000 or http://www .ada ptec.c om .
7-2 T r oublesh oo tin g Inp ut P roblem s Prob lem: The syste m won’t a ccept input fr om the keybo ard. Ensure that you have set the i nput mode to external: 1 On the I/O connectivity panel of the DuraStor 6 200SR, turn the switch to E XT .
7-3 T r oublesh oo tin g Prob lem: Nothing is displa ye d on the termina l em ulator screen. The pr obable cau se of this problem is a bad RS-232 cable connection or swapped transmit/receive lines. If the cable is pr operly connected on both ends, try a null modem adapter , which will reve rse t he R S-232 tran smit and receive sign a ls.
7-4 T r oublesh oo tin g disk dri ves fr om two dif fer ent vend ors m ay diff er in capaci ty by 100 M B. W ith a backo f f of 0%, yo u would not be able to r epla ce an array memb er ’s slightly larger 18-GB disk drive with a smaller 18 - GB disk drive.
7-5 T r oublesh oo tin g other devices on the ho st SC SI chan nel . If you ha ve a long SCSI cable, try a dif ferent or shorter cable. Prob lem: O nly one arra y is dis pla yed during host SCSI BIOS scan. Check to ensur e that LUN support is enabled.
7-6 T r oublesh oo tin g Pr ob lems During Bootu p The follow ing sectio ns describe problems you mi ght encounter during POST o r during boo tup, and expl ain how to r esol ve those pr oblems . POST shows problems related to the processor , log ic, and mem ory .
7-7 T r oublesh oo tin g Prob le m: The syste m hangs during a disk dr ive scan. Follow these steps to resolve the problem: 1 Check the storage enclosur e to make sur e everything is pr operly connected. 2 Remove and r epl ace the disk drive that fa iled the scan.
7-8 T r oublesh oo tin g W arni ng and Err o r Events There are a number of condition s that trigger warni ng or error events, activate the audible alarm , and may af fect the st ate of the Status a nd Fault LEDs. The audible alarm sounds mainly when Adaptec Disk Array Administrator displays a warning or err or event.
7-9 T r oublesh oo tin g DRIVE DOWN An err or occurred with the disk drive and i t was d own ed , r emoving it fr om t he acti ve arra y . Add a sp are to the arr ay o r th e sp are p oo l. The n r eplace the bad disk drive. See Addi ng a D edic ate d Spa re on p ag e 4- 2 or Addi ng a Spar e to the Sp ar e Poo l on page 4-5 .
7-10 T r oublesh oo tin g Er ro rs Err or events let you know that something related to the storage enclosure, contr oller , or disk drives has failed a nd r equir es immedia te attentio n. Ta b l e 7 - 2 defines each err o r event and r ecomm ends the action you sh ould tak e.
7-11 T r oublesh oo tin g Using the Loader Uti lity Men u If you have any diagnostic errors, contact Adaptec technical support. (See page 7-1 for contact information.) Under st anding SCS I Err ors The event log includes SCSI er rors reported by SEPs and disk drives on your system.
7-12 T r oublesh oo tin g T able 7-3 S ense K ey Desc r iptio ns Sense Key Description 0h No sens e 1 h Re c o v e re d er ror 2h Not r ea dy 3h Medium error 4 h Ha rd w a re er ror 5h Illegal r eques.
7-13 T r oublesh oo tin g Disk Chan nel Errors Disk channel err ors ar e similar to disk-detected err ors, except they ar e detected by the contr oller , instead of the disk drive. Some disk channel err ors ar e disp layed as text strings, others ar e di splayed as hexadecimal codes.
7-14 T r oublesh oo tin g T able 7-5 Di sk Chann el Er ror Cod es Error Code Description 04 Data overru n or underr un occurr ed while g etting sense d ata. 05 Request for sense d ata failed. 20 Selecti on timeou t occ urr ed (displa yed as Sel T imeout).
7-15 T r oublesh oo tin g V ol tage and T emper atur e Errors and W arn ings Most voltage and tem perature erro rs and warnings occur due to the storage enclosure.
A-1 A Storage Concepts In This Appen dix Disk Array Administrator uses specific terms to describe storage conc ept s an d co nf igur ati ons . If y o u ar e new to sto rage tec hno log y and arra y configuratio ns, this secti on will help yo u understan d basic Redunda nt Array of Independent Disks (RAID) techn ology and te rminol ogy .
A-2 Storage Co ncepts Contr oller s A contro l ler i s a ha rdwa re de vi ce th a t pe r for ms in pu t/ ou tp ut ( I/ O) functi ons. Cont rollers a lso p erfor m other func tions such as read and write ca ching and RAID managem ent. They can be internal (ins ide the host co mpu ter) o r exter nal (in a n encl osure).
A-3 Storage Co ncepts ■ Channel Number — In dicates to which channel (bus) on the controller the SCSI drive is attached. ■ SCSI ID (also kn own a s ta r get ID )—Identifies the drive on the SCSI channel.
A-4 Storage Co ncepts Figure A-1 r epresen ts an array made up of two disk drives. The fr ee space of the larg er drive is not used. Figu re A-1 O ne arr a y m ade up of two di sk driv es Free Spa ce Free space r ef er s to t he sp ace o n a an in iti a lized dis k dr ive t hat is no t in use by an array .
A-5 Storage Co ncepts 2 Contiguous storage space pr oduced during the RAID cr eation pr ocess. See Figure A-2 . Figu re A-2 Arr a y M ade of Single P ar titio ns These partitions ar e not seen by the operating sys tem. Rather , the y ar e the bu ildi ng b loc ks of a vir tua l di sk.
A-6 Storage Co ncepts Redund ancy Redu nda ncy refers to the capability of pr eventing data loss if a disk drive fails. Some a rray types give you thi s capability in one of two method s: ■ T wo identical copi es—Data is w ritten to part itions o n two disk drives, resulting in the sa me data bein g stored in two places.
A-7 Storage Co ncepts The types of arrays yo u can create depends on the maximum number of disk drives you can use on the controller . RAID 5 set ■ Lower co st than RAID 1 ■ Ve r y h i g h r e a d.
A-8 Storage Co ncepts V olume Set A vo lum e se t , also kn own a s a virtual disk or a JBO D, is a single disk drive that is not used in an array . Depending on the controller , a volume set can also be a partition that equals the full capacity of a given disk drive.
A-9 Storage Co ncepts A stripe set distributes th e data among th e partitions in a way that optimizes access speed (performan ce). By making a single r equest for the amount of data in a stripe, an a.
A-10 Storage Co ncepts Applications Suitable for Striped Se ts Compar ed to RAID a rrays, striped sets ar e not well-suited f or online storage of important data.
A-11 Storage Co ncepts Applications Suitable f or Mirr or Sets Mirror sets are particularly sui table for the f ollowing ty pes of applica tions: ■ Data for wh ich reliability an d availa bility req.
A-12 Storage Co ncepts Figu re A-6 RAID 5 set Applications Suitable f or RAID 5 Sets These types of ap plicatio ns are suitable for RAID 5 sets: ■ T r ansaction r ead req uests ar e high. ■ Data avail ability is wo rth pr otecting, but th e cost of mirroring would ex cessive.
A-13 Storage Co ncepts Stripe Set of Mirror Sets (RAID 0/1) Multilevel arra ys or hybrid arrays are arrays that contain other arrays. A stripe s et of mi rror set s , also known as RA ID 0/1, is an multilevel a rray made up of two or mo r e equal-si zed mirror sets.
A-14 Storage Co ncepts The stripe set of mirror sets is the top-level array , and mirror sets A, B, a nd C ar e the un derlying arra ys. Applications Suitable for RAID 0/1 Sets The follo wing types o .
A-15 Storage Co ncepts Figu re A-8 Stripe set of RAID 5 s ets The stripe set of RAID 5 sets is the top-level array , and RAID 5 sets A and B are the underlying arra ys.
B-1 B SAF-TE Implementation In This Appen dix This section describes how to implement th e SCSI A ccessed Fault- T o lerant Enclosures (SAF-TE) Interface Specifica tion and ho w to adjust specific pa rameters. The DuraS tor 6200S extern al RAID controller is fully complia nt with the S AF-TE Interface Spe cif ica tio n 1.
B-2 SAF- TE I mpl ement ati on Enc l osur e Consi derat ions The DuraSto r Storag e Subsystem incl udes SEPs. The controller pr ovides information to the user via the enclosur e LEDs and the host interface. The contro ller uses a standar d set of SCSI commands to communicate with the SEPs via back-end dis k channels.
B-3 SAF- TE I mpl ement ati on Admini strator Uti lity S EP Co nfigu ration Options SAF-TE conf iguration s ettings a r e autom atically ena bled when th e DuraStor 6200 S RAID controller controller is ins talled in an enclosure that contains a SE P .
Glossary- 1 Glossary A active- active Active-active mode is when two contro llers in a storage system cooperate to pr ovide r edundancy . If one contr oller fails, the r emainin g con tr oller tak es over . T o accom plish this, each controller has two host ports, one of which is normally active, the other normally passive.
Glossary-2 Glossary chunk A contiguous set of data written onto a single disk drive when a stripe set, R AID 5 set, or stripe set of mirror sets dist ributes, or st ri pes, d ata acr oss it s r espec ti ve dis k dri ves . S e e also RAID 5 ; stri pe set (RAID 0) ; stripe set of mirr or sets (RAID 0/1) ; stri pe set of RAID 5 sets (R AID 50) .
Glossary-3 Glossary E enc l osure A physical housing for disk d rives, which can be connected externally to a co mputer . A n enclosure usually con tains one or more po wer supplies, fans, an d temperatur e sensors. See also SAF- TE (SCSI Accessed Fault-T olerant Enclos ure) .
Glossary-4 Glossary H HB A (hos t bus adapter) An HBA is the critical link between a h ost server or workstation and a stor age subsystem , integratin g computi ng platforms, OS s, and I /O protocol s to ensure proper in teroperability a nd functionality .
Glossary-5 Glossary L logical unit nu mber See LU N . loop ad dress A loop addr ess is an fibr e chan nel (FC) term that indicates the unique ID of a node in FC l oop topolog y . A loop address is sometimes r eferr ed to as a Loop ID. LUN Stands for logical unit number .
Glossary-6 Glossary par tition A subdivision of a d isk or s torage ar ea. Ther e are thr ee ma in types of parti tio ns: 1 A portion of a physical or virtua l disk dri ve that functions as a separate unit.
Glossary-7 Glossary R RAID 0 See stripe se t (RAID 0) . RAID 0/1 See stripe se t of mirror sets (RAI D 0/1) . RAID 0/5 See stripe set o f RAID 5 se ts (RAID 50) . RAID 1 See mirror se t (RAID 1) . RAID 3 A RAID 3 set is an array made up of three o r mor e disk drives.
Glossary-8 Glossary redundanc y The capability of pr eventing data loss if a dis k drive fails. Some array typ es give you this ca pabilit y using one o f two method s: two identical copies or parity .
Glossary-9 Glossary SCSI channel term ination See termin ation . SCSI device A single uni t on a SCSI bus that orig inates or services SCSI commands. A SCS I device is identified by a unique SCSI addr ess . SCSI devices can act a s initiators or tar gets.
Glossary-10 Glossary storage sys tem A storage system is wh en the RAID contr oller r esides outside of the host system enclosure . The subsystem is contr olled fr om the host sy stem usin g storage manag emen t softw are or fi rmware (such as Adaptec Disk Array Administrator).
Glossary-11 Glossary termination T ermination (also known as a terminator block) r efers to the electrical connection at each end of a SCSI bus. The functio n of a terminator blo ck is to provide for a pr oper electrical transmi ssion of the data across the cable.
Index-1 Index A A and B controllers. See contro llers, 1 and 2 act ive -ac tiv e mo de adding array s 5-10 array ownership 2-18 , 5-9 definition 5-8 deleting arra ys 5-1 0 disk drives 2-4 dual boot 5-.
Index-2 Index B backoff pe rcentage 7-3 battery 5-18 to 5-19 battery life mo nitor 5- 19 to 5-20 baud rate 1-3 , 7- 2 blinkin g LEDs 6-5 bo otup trou bl esho ot ing 7-6 bus speed 5- 6 buses A-2 C cach.
Index-3 Index hot-swapping 5-2 2 LEDs 6- 5 memb er nu mber 6-2 metadata 6-3 resca nning 6-6 resca nning c han nels 5-21 SMART 6-5 spare po ols 4-5 spare t ypes 4-1 status 2-12 testing 6-7 TUR command 6-7 disk IDs A-2 disk s. See disk drives domain va lidation 5- 7 Down D rive Functio n 6-6 drive numbers 2-12 drive requirements 2-1 drives.
Index-4 Index number ing 5-5 operating sys tems 2-3 overlapping 2-3 parititon LUNs 5-6 SEP 6-8 SEP LUNs 5-6 statistics 3- 7 viewing 5-6 M memb er nu mber 6-2 metadata 6-3 mirro r set A-6 , A-10 multip.
Index-5 Index S SAF -TE B-1 to B-3 SEP s and SAF-TE enclosures 6-8 to 6-10 and S AF-TE im plementatio n B-1 to B-3 SAF-TE enclos ures 6-8 to 6-1 0 SAF-TE Environmental Processor.
Index-6 Index terminal emulator 1-2 trou bleshoot ing 7-2 terminal program parameters 1-2 Test Unit Read y comm and. See TUR command 6-7 timing out 1-5 trou bleshoot ing bootup 7-6 COM port 7-2 device.
R Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, CA 95035 US A © 2001 Adaptec, Inc. All rights reserved. Adaptec and the A daptec logo are trade marks of Adapt ec, I nc. w hich may be regi ster ed i n so me ju risd ictions . P ART N UMBER : 512933-06, Ve r.
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