Instruction manual

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ATTO Technology Inc. FastStream SC 5700 Installation and Operation Manual
2.3 Use Hot Spares
If a member of a virtual device becomes degraded or faulted, you lose some redundancy in your RAID
group until a new member is rebuilt into the RAID group. However, Hot Spare devices may be
designated as replacements for faulted devices without intervention by you or a host.
The ATTO FastStream SC 5700 replaces
degraded or faulted virtual devices in RAID
groups without intervention by you or a host. You
may set up a pool of Hot Spare devices of
different sizes appropriate for your RAID groups.
Hot Spares may be set up by the FastStream SC
5700 automatically depending on your choices
during initial setup.
Note
Block devices in the Hot Spare pool should be
of appropriate size to the RAID group so that
smaller block devices are not replaced by
much larger Hot Spare devices.
When the ATTO FastStream SC 5300 detects a
faulted device:
• The Controller searches the Hot Spare pool for
the smallest block device of sufficient size to
substitute for the faulted drive.
• The FastStream replaces the faulted device with
the device from the Hot Spare pool.
• The FastStream begins an automatic rebuild of
the RAID groups.
Note
A RAID rebuild may take up to two hours to
complete.
1 If you are not already in the ExpressNAV
interface, type the IP address of your appliance,
as found in Use the ExpressNAV interface
on
page 29, in a standard browser, click Enter
Here and type in your user name and
password.
2 Click on the FastStream arrow.
3 Click on the Add/Remove Hot Spares button
4 Click on Next.
5The Add/Remove Hot Spares page appears.
Follow the on-screen directions. When you
complete your changes, click on Commit.
6 A warning box appears. In the warning box,
verify that you want to complete the
configuration by clicking on Yes. Clicking on No
ends the procedure without making a change.
7 When the process is complete, the Health and
Status Monitor page appears.