Delete An Iscsi Disk; Configuring Vss/Vds For Iscsi Disks - Overland Storage SnapServer Administrator's Manual

SnapServer/GuardianOS 7.5 Administrator's Guide
After disconnecting all client initiators, click the iSCSI disk name in the table on the primary
page to display the iSCSI Disk Properties page. Click Delete iSCSI Disk (which is followed
iSCSI
by a confirmation page) to delete the iSCSI disk.

Configuring VSS/VDS for iSCSI Disks

GuardianOS 7.5 provides VSS and VDS hardware providers for support of Microsoft Volume
Shadow Copy Services (VSS) and Virtual Disk Service (VDS) for iSCSI disks.
• The VSS hardware provider provides a mechanism for taking application-consistent
native snapshots of iSCSI disks without performing full application (or system)
shutdown. A snapshot of an iSCSI disk can be automatically created by a backup job run
by a VSS-compatible backup application, so that the job backs up the snapshot volume
rather than the main production volume.
NOTE: VSS iSCSI snapshots are managed by the Windows client and represent the iSCSI disk,
• The VDS hardware provider allows administrators to natively manage SnapServer
iSCSI disks, using any VDS-compliant management console application.
SnapServers support VSS and VDS on the following platforms:
Backing up an iSCSI Disk using VSS Snapshots. Windows VSS-compatible backup
applications can create snapshots of SnapServer iSCSI disks to perform consistent backups of
application data without stopping the application, using the snapshot instead of the live
volume as the backup source.
NOTE: To use Symantec Backup Exec as your VSS-compatible backup application, you must first
Each VSS snapshot of an iSCSI target requires additional space on the pool or volume on
which the iSCSI disk resides. The required space is 10% of the size of the iSCSI disk per
snapshot. If this amount of free space is not available on the pool or volume, the VSS snapshot
will not be created and an error will be reported by the SnapServer VSS hardware provider to
the Windows event log.
When creating iSCSI disks for later VSS snapshot use, be sure to leave at least 10% of the size
of the iSCSI target free on the SnapServer volume.
NOTE: VSS snapshots can only be taken of Windows volumes that fully consume the iSCSI disk.
1. Add the VSS client to the SnapServer.
a. From the Storage > iSCSI page, click the VSS/VDS Access button.
10400541-001
not the Snap volume on which the iSCSI disk resides. They are not related to GuardianOS
snapshots as described in
feature is not currently supported.
Platform
Windows Server 2003
Windows Server 2003 R2
Windows Vista
Windows Server 2008 R2
modify the registry of the Backup Exec server and agents.
Snapshots of iSCSI disks that contain multiple Windows volumes are not supported.
©2008-14 Overland Storage, Inc.
Snapshots on page 109 . The VSS iSCSI snapshot rollback
VSS
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6 - Other Storage Options
VDS
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