iSCSI Configuration on the SnapServer
88
SnapServer Administrator Guide
iSCSI Configuration on the SnapServer
iSCSI disks are created on the
Storage > iSCSI
screen of the Administration Tool.
Before setting up iSCSI disks on your SnapServer, carefully review the following
information.
Isolate iSCSI Disks from Other Resources for Backup Purposes
It is important to isolate iSCSI disks from other resources on the SnapServer for two
reasons:
• The file system of an iSCSI disk differs fundamentally from the SnapServer’s
native file system
• iSCSI disks are managed from client software rather than the SnapServer’s
Administration Tool
For ease of management and particularly for data integrity and backup purposes,
either dedicate the entire SnapServer to iSCSI disks, or if the server is to be used
with other shared resources, place the iSCSI disk and the other shared resources on
separate volumes.
• Back up an iSCSI Disk from the Client, not the SnapServer —
An iSCSI disk is not
accessible from a share and thus cannot be backed up from the SnapServer. The
disk can, however, be backed up from the client machine from which the iSCSI
disk is managed.
Note
While some third-party, agent-based backup packages could
technically
back up an iSCSI disk on the SnapServer, the result would be inconsistent or
corrupted backup data if any clients are connected during the operation. Only the
client can maintain the file system embedded on the iSCSI disk in the consistent
state that is required for data integrity.
• Do Not Use the GuardianOS Snapshots Feature on a Volume Containing an iSCSI
Disk —
Running a GuardianOS snapshot on a volume containing an iSCSI disk
will abruptly disconnect any clients attempting to write to the server’s iSCSI disk
and the resulting snapshot may contain inconsistent data. Supported Windows
servers can create a native snapshot of a SnapServer iSCSI disk using VSS (see
“Configuring VSS/VDS for iSCSI Disks” on page 93 for more information).
Summary of Contents for 5325301507 - Snap Server 4400 NAS
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Page 110: ...Configuring VSS VDS for iSCSI Disks 94 SnapServer Administrator Guide ...
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