Expansion Units; Managing Expansion Unit Storage - Overland Storage SnapServer Administrator's Manual

SnapServer GuardianOS 7.2 Administrator's Guide
NOTE: Disk drives that have been previously configured as part of a RAID can be added. They
2. Navigate to the Storage > RAID Sets page.
3. Click Global Spares.
4. From the Available Disks list, select one or more drives to add to as Global Spares,
and then click OK.
The disk is added as a Global Spare.
If you don't want to use a drive as a Global Spare, repeat the process and uncheck the box on
the Available Disks list.
Reintegrate Orphaned Disk Drives
An orphaned disk drive occurs in the following circumstances: (1) a working drive from a
RAID set is accidentally removed from the server; or (2) the RAID set or system is started
with a drive missing. In either case, the drive becomes suspect and is considered an orphan.
To remedy the problem, click the RAID set name in the Storage > RAID Sets page, then click
the Repair link next to the drive in question.

Expansion Units

To increase the capacity of a SnapServer DX-series server, use one or more SnapExpansion
units.
NOTE: If GuardianOS detects an expansion unit that is not integrated with the SnapServer, a
The SnapExpansion is a 2U, 12-bay SAS-connected expansion unit for expanding either
SnapServer DX1 or DX2 systems. The SnapExpansion supports SAS and SATA hard drives
and allows capacity growth by creating additional DynamicRAID storage pools.
• By adding the optional SAS expansion card to the SnapServer DX1, you can attach up
to three SnapExpansion chassis to grow storage up to 120TB.
• The SnapServer DX2 includes the SAS expansion card that allows for seven
SnapExpansion chassis to be attached, to scale up to 288TB in total space.
A SnapExpansion is accessed and managed through the SnapServer head unit to which it is
connected. The expansion unit has no physical connection to the network.

Managing Expansion Unit Storage

The Storage > Disks page displays the head unit and any expansion units attached to the
head unit. For more information about the Disks page, please see
10400317-003 05/2012
are indicated in the Storage > Disks list by the
disk has previously been used in a different system (foreign). If you want to use the
drive, add it to the RAID as you would any other drive.
message is displayed across the top of the Disks, Admin Home, RAID, and Storage Pool
pages with a link to information about the orphaned expansion unit.
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Expansion Units
icon and a message stating that the
"Disks" on page 6-25.
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