Windows Server And Snapshot Configuration - Hitachi AMS2100 User Manual

Windows Server and SnapShot configuration

Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
• Multiple V-VOLs per P-VOL cannot be recognized from the same
host. Limit host recognition to one V-VOL.
• When mounting a volume, use the CCI mount command, even if
using the Navigator 2 GUI or CLI to operate the pairs. Do not
use the Windows mountvol command because the data residing
in server memory is not flushed. The CCI mount command does
flush data in server memory, which is necessary for SnapShot
operations. For more information, see the Hitachi Adaptable
Modular Storage Command Control Interface (CCI) Reference
Guide.
• Multiple V-VOLs per P-VOL cannot be recognized from the same
host. Limit host recognition to one V-VOL.
Volume mount:
• In order to make a consistent backup using a storage-based
replication such as SnapShot, you must have a way to flush the
data residing on the server memory to the array, so that the
source volume of the replication has the complete data. You can
flush the date on the server memory using the umount
command of CCI to un-mount the volume. When using the
umount command of CCI for un-mount, use the mount
command of CCI for mount. For more detail about mount/
umount command, see the Hitachi Adaptable Modular Storage
Command Control Interface (CCI) Reference Guide.
• If you are using Windows Server 2003, mountvol /P to flush data
on the server memory when un-mounting the volume is
supported. Please understand the specification of the command
and run sufficient test before you use it for your operation.
• In Windows Server 2008, use the umount command of CCI to
flush the data on the memory of the server at the time of the
unmount. Do not use the mountvol command of Windows
standard. Refer to the Hitachi Adaptable Modular Storage
Command Control Interface (CCI) Reference Guide for the detail
of the restrictions of Windows Server 2008 when using the
mount/umount command.
• Windows may write for the un-mounted volume. If a pair is
resynchronized while remaining the data to the S-VOL on the
memory of the server, the compatible backup cannot be
collected. Therefore, execute the sync command of CCI
immediately before re-synchronizing the pair for the un-
mounted S-VOL.
Volumes recognized by the host:
• If you recognize the P-VOL and S-VOL on Windows Server 2008
at the same time, it may cause an error because the P-VOL and
S-VOL have the same disk signature. When the P-VOL and V-
Planning and design
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