HP StorageWorks Continuous Access EVA Administrator Guide (T3687-96043, December 2005)

Synchronizemanagementserversandarrays ......................... 29
Testfailover........................................ 29
3 Failover and r ecovery ...................... 31
Planningforadisaster ................................... 31
Failoverandrecoveryprocedures .............................. 31
Performingfailoverandrecovery............................. 32
Choosingafailoverprocedure.............................. 32
Plannedfailover.................................... 33
Unplannedfailover................................... 35
Recoverfromfailsafe-lockedafterdestinationloss...................... 36
Failbacktotheoriginalsource ............................. 38
Returnoperationstonewhardware............................ 38
Recoveringfromadiskgrouphardwarefailure....................... 41
Faileddiskgrouphardwareindicators ........................ 41
Diskgrouphardwarefailureonthesourcearray .................... 42
Diskgrouphardwarefailureonthedestinationarray .................. 44
4 O perating system specifics .................... 47
ResuminghostI/Oafterfailover............................... 47
HPOpenVMSproceduretoresumeI/O.......................... 47
HPTru64UNIXproceduretoresumeI/O......................... 47
HP–UXproceduretoresumeI/O............................. 47
IBMAIXproceduretoresumeI/O ............................ 48
LinuxproceduretoresumeI/O.............................. 48
NovellNetWareproceduretoresumeI/O......................... 48
SunSolarisproceduretoresumeI/O........................... 49
VMwareproceduretoresumeI/O............................ 50
Windows2000/2003proceduretoresumeI/O...................... 50
RedHatandSuSELinuxLifekeeperclusters .......................... 50
BootlessfailoverusingLinuxandLVM............................. 50
Sourcehostprocedure ................................. 51
Destinationhostprocedure ............................... 51
5Managingremotereplication................... 53
UsingremotereplicationinamixedEVAenvironment...................... 53
Managingmergesandfullcopy............................... 53
ThrottlingmergeI/Oafterlogging............................ 53
MaintainingI/Operformancewhilemerging ....................... 53
Preparingforafullcopy ................................ 53
Optimizingperformance .................................. 54
Loadbalancing .................................... 54
Minimizesimultaneousreplicationevents ......................... 54
Backing up replication configuration ............................. 54
Usingthereplicationmanagerforbackups ........................ 54
Using SSSU to capture your configuration......................... 55
Manually capturing your configuration .......................... 56
Upgradingcontrollersoftware................................ 58
Planningacontrollersoftwareupgrade.......................... 58
Coordinatingcontrollersoftwareupgradesonsourceanddestinationarrays .......... 58
Specialremotereplicationuses ............................... 58
UsingDRgroupsandsnapclonestomovedata ...................... 58
Usingsnapclonestocascadedatareplicationacrossthreesites................ 60
Beforeyoubegin ................................. 61
Procedure .................................... 62
Postprocedure .................................. 62
4