Instruction/ maintenance manual of the product 3 Sun Microsystems
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iii Conten ts Preface v 1. Ove rview 1 Sun SND R So ftware Description 1 Supported Hardware and Software 3 T CP / IP C on n e cti o n H ard w are C o m po n en t s 3 Network Multipathing 4 App lic ations 5 Ar chitec tur e 5 2.
iv Sun St orEd ge Ne two rk D ata R e plic at or 3 .0 Co nfi gur at ion G uid e • June 20 01 Confi g ur ing The Sun SNDR Softwar e f or Mutu al Replica tion 12 Order-Dependent Writes and Volume Set .
v Prefa ce Th e Sun StorEdge Network Data Replicator 3.0 Configuration Guide des cr ibes the Su n StorEdge™ Ne twork Data R eplicator (Sun SNDR ) software and general informat ion about its use.
vi Sun Sto rEdge Ne t work Dat a Re pl icat o r 3 .0 Confi gur ati on Guid e • J un e 2001 Using UNIX Commands This docume nt may not contain in formation on b asic UN I X ® co mmand s and pr oc edu re s suc h as s hut tin g down th e sys tem, b ooti ng th e syst em, a nd con fi gu rin g de vice s.
Preface vi i Sh ell Promp ts Related Documenta tion Sh ell P rom pt Cs h e l l machi ne_na me % Cs h e l ls u p e r u s e r machine _name # Bour ne shel l an d Korn sh e ll $ Bo urne sh ell and Korn s.
vi ii S un S to rEd ge Ne twor k Data R epl ic ator 3. 0 C onf igu rat io n Gu id e • J une 20 01 Platform Notes : The Sun Quad Fa stEthernet D evice Driver 806-3989 Su n Enterprise 10000 Inte rDomain Netw orks User Guide 806 -4131 Syst em adm inist ra tion Su n StorEdge Instant Im age 3.
Pref ac e ix Acce ssing S un D ocumenta tion Online A broad selection of Sun system docum entation is located at: http: //www.su n.com/p roducts -n-solut ions/ha rdware/ docs A com plete set o f Solari s docum ent ation and m any o ther t itles are loca ted at: http: //docs.
x Sun St orEd g e Ne two rk D ata R e plic at or 3.0 Co nf igur atio n Guid e • J u ne 20 01.
1 CHAP TER 1 Ov er vi ew Cau tion – Do not install or u se the Sun StorEdge V ersion 3.0 Core and data services software on se rvers in a Su n Clust er 3.0 e nvironm ent. Th e V ersion 3.0 softw are is no t co- exist en t wit h t he Su n Clu ster 3 .
2 Sun S torE dge N etwo rk Dat a R epli cat or 3.0 Co nfigur at ion G uide • Ju ne 200 1 The replicat ion mode ca n be synchronous or asynchronous based as a user-selectable parameter for each Sun S N DR volume set.
Chapt er 1 Overv iew 3 ■ One- to-man y and mul tiho p volu me sets — The Sun SN DR sof twa r e ena ble s yo u to cre ate one-to-many and multihop volume sets. In a one-to-many volume set, you can replicate data from on e primary volume to m any secondary volume s r es i ding on one or more h osts.
4 Sun S torE dge N etwo rk Dat a R epli cat or 3.0 Co nfigur at ion G uide • Ju ne 200 1 Netw ork M ultip athing Network multipathing w ith failover is supporte d on h osts runnin g the Solaris 8 , Update 3 operatin g e nvironment .
Chapt er 1 Overv iew 5 Applications The Sun SNDR softwar e provides prot ection of critical en terprise informat i on . T he following information types ar e candidates for re mot e replication: ■ D.
6 Sun S torE dge N etwo rk Dat a R epli cat or 3.0 Co nfigur at ion G uide • Ju ne 200 1 FIGURE 1 The Sun SNDR Software Archi tecture Pr imary host Appl ication Use r Sun STE or SV Kernel S u n Stor.
7 CHAP TER 2 Con figu ra tion C on sidera tion s V olumes Eligible for R eplication Generally , in clude the following critical volumes in the Su n SNDR configuration: ■ Datab ase and datab ase mana.
8 Sun S torE dge N etwo rk Dat a R epli cat or 3.0 Co nfigur at ion G uide • Ju ne 200 1 Choosing V olu me L evel Pr otection In general, cu stomers s h ould pr otect their data w ith some level of RAID. W ith the Sun SNDR software, the primary volume s can be pr ot ected by any software or hardw are RAID level desi red.
Chapter 2 Config uration C onsider ations 9 If yo ur server is configured in a clust er e d environment , set th e bitmap mode to 1. I f your server is not configu r ed in a cluster ed environment, you can also choose t he bi tma p mod e sett ing of 1 to im pr ov e err or or d isa ste r rec ove ry .
10 Su n S torE dg e N etwo rk Dat a Rep lic a tor 3. 0 Co nfig ura tio n Gui de • June 2 00 1 Co nfig ur ing R ed undan t Lin k s B etw een S ite s The So laris 8 operat ing envi ronmen t offers IP mul tipath ing. T his feature per mits a Solaris host to group multiple ph ysical network interfaces into a single logical inte rface .
Chapter 2 Confi guration C onsider ations 11 Choo sing Betwe en Syn chronous an d Asynchr o nous Replication In synchr onous mode, a write operati on is not confirmed as complete u ntil t he re m ote volume has been u pdated.
12 Su n S torE dg e N etwo rk Dat a Rep lic a tor 3. 0 Co nfig ura tio n Gui de • June 2 00 1 When T o Suspend Re plication to the Secondary Sit e For many cust omers, the Sun SNDR softw are is us e.
Chapter 2 Configu ration C onsider ations 13 Or de r -De pendent W rite s and V o lume Set Gr o uping For the Sun SNDR V e rsion 2.0 softw are, write ordering is only maintain ed by the Sun SNDR software within a logical volu me. In V ersion 3.0, write ord e ring is also maintained for gr ou ps of asynchronously replicating volume s ets.
14 Su n S torE dg e N etwo rk Dat a Rep lic a tor 3. 0 Co nfig ura tio n Gui de • June 2 00 1 Rec ove ry Con sid erati ons Th e Sun Stor Edge Network Data R eplicator 3.0 System A dministrator ’ s Guide c ont ains information about v arious r e covery s ce narios.
Chapter 2 Configu ration C onsider ations 15 Choosing the Resynchronization T yp e: Updat e or Fu ll Tip – If a synchronizat ion in itiated b y t he sndra dm -m or sndra dm -m -r comm ands is interrupted, use the sndrad m -m - u upd ate comm a nd to c om plete th e s ynch roniz ation.
16 Su n S torE dg e N etwo rk Dat a Rep lic a tor 3. 0 Co nfig ura tio n Gui de • June 2 00 1 Usin g T he Su n SN DR a nd Su n St or Edge I nsta n t Image Softwar e T o hel p ens ur e the hi ghe st .
Chapter 2 Configu ration C onsider ations 17 Sun S NDR S oftw are an d Sun St or Edge Fast W rite Cache Software Note – Y ou can not use the Su n Stor Edge Fas t W rite Ca che (F WC) prod uct, inc lud ing the SUNWnvm V er sion 3.
18 Su n S torE dg e N etwo rk Dat a Rep lic a tor 3. 0 Co nfig ura tio n Gui de • June 2 00 1 One-to-M any a nd Mu ltihop V olume S ets The Sun SNDR software enables you t o create on e -to-many and multihop vol u me sets.
Chapter 2 Configu ration C onsider ations 19 Us ing The S un S NDR S of tware in a Fir ewa ll Environment Y o u ca n u se the S un SND R soft ware wi th a ny enh ance d net work p roduct tha t Su n off e rs. Port 121 must b e available for use b y the Sun SNDR sndr d dae mon.
20 Su n S torE dg e N etwo rk Dat a Rep lic a tor 3. 0 Co nfig ura tio n Gui de • June 2 00 1.
An important point after buying a device Sun Microsystems 3 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sun Microsystems 3 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sun Microsystems 3 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sun Microsystems 3 you will learn all the available features of the product, as well as information on its operation. The information that you get Sun Microsystems 3 will certainly help you make a decision on the purchase.
If you already are a holder of Sun Microsystems 3, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sun Microsystems 3.
However, one of the most important roles played by the user manual is to help in solving problems with Sun Microsystems 3. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sun Microsystems 3 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
