HP StorageWorks SAN Virtualization Services Platform administrator guide (5697-0204, January 2010)

Boot from SAN with OpenVMS .................................................................................................. 78
Boot from SAN with Solaris ........................................................................................................ 78
Boot from SAN with VMware ..................................................................................................... 78
Boot from SAN with Windows Server .......................................................................................... 79
8 Microsoft Volume Shadow Copy Service ............................................. 81
The VSS model ......................................................................................................................... 81
Installing and configuring Microsoft VSS with VSM virtual disks ...................................................... 82
Installing the SVSP VSS hardware provider on the host server ................................................... 82
Making sure that VSS works with the VSM virtual disks ........................................................... 86
Integrating VSS with asynchronously mirrored VSM virtual disks ............................................... 90
Integrating VSS with backup software ................................................................................... 90
VSS deployment with VSM virtual disk groups ........................................................................ 93
Uninstalling the SVSP VSS hardware provider ........................................................................ 94
9 Site failover recovery with asynchronous mirrors ................................... 95
The asynchronous mirror decision table ........................................................................................ 95
Establishing a disaster recovery site ............................................................................................. 97
Testing or validating your ability to recover from a DR site without detaching or splitting the async
mirror group ............................................................................................................................ 98
Testing a DR site or switching between sites .................................................................................. 98
Failing over to the DR site and back to the main site after a problem ............................................... 99
Failing over to a disaster recovery site when the main site is totally lost .......................................... 100
10 Site failure recovery with synchronous mirroring ............................... 103
Synchronous mirroring across SVSP sites .................................................................................... 103
Site failures ..................................................................................................................... 104
Recovering from a Site A failure ......................................................................................... 104
Recovering from a Site B failure .......................................................................................... 104
Synchronous mirroring in a single stretched SVSP domain ............................................................ 104
Solution topology ............................................................................................................. 104
Configuration requirements ................................................................................................ 105
Zoning with stretched domains ........................................................................................... 105
Site failures ............................................................................................................................ 105
General description of site failures ...................................................................................... 105
Synchronous mirror behavior as a result of a site failure or a site disconnection ........................ 106
Synchronous mirror failure analysis ..................................................................................... 106
Recovering synchronous mirror volumes from site disconnection .............................................. 107
Recovering synchronous mirror groups on the surviving site .................................................... 107
Recovering the surviving site by using Force Resume .............................................................. 107
Re-establishing the connection with the recovered site after Force Resume ................................ 109
Recovering the surviving site by using Force Delete ............................................................... 109
Re-establishing the connection with the recovered site after Force Delete .................................. 111
11 Configuration best practices .......................................................... 113
SAN topology ........................................................................................................................ 113
Redundant fabrics ............................................................................................................ 113
SAN switches .................................................................................................................. 113
Fibre Channel links ........................................................................................................... 113
Mixing SAN-level virtualization with non-virtualized environments ........................................... 114
Setup volume configuration ...................................................................................................... 114
Building basic storage pools .................................................................................................... 114
Building storage pools using stripe sets ............................................................................... 116
HP StorageWorks SAN Virtualization Services Platform administrator guide 5