Adding Drives Of Larger Capacity - Silicon Graphics InfiniteStorage S330 RAID User Manual

Adding Drives of Larger Capacity

007-4798-001
This section provides guidelines for upgrading the disk drives in a storage array. Carefully read
your software documentation and this entire section to determine if you should follow this
procedure, a modified version of this procedure, or use a different procedure provided by your
operating system. Instructions provided with your software should supersede the instructions in
the section.
Warning:
Electrostatic discharge can damage sensitive components. Use a grounded
wrist strap or other antistatic precautions before handling enclosure components.
The only method for upgrading disk drives is to replace them all at the same time. This method
requires you to back up the enclosure and shut down the storage array before replacing the drives.
After replacing all the drives, you must reconfigure the enclosure and restore the data from backup
media. This is the safest way to exchange drives without losing data. However, this method may
take a long time to complete because of the backup, reconfiguration, and restoration processes. In
addition, other users will not be able to use the enclosure until you finish the procedure. You must
use this method on RAID 0 logical units (LUNs).
Follow these instructions to replace all drives at the same time. All the data currently on the drives
will be lost when you replace the drives. You must use this method if you are upgrading drives
containing RAID 0 volumes.
1. Read the following:
• "Upgrading Drives" on page 61.
• Information in your software documentation.
• Documentation shipped with the new drives.
Read all precautionary notes, kit instructions, and other information. Kit instructions often
contain the most current information regarding the drives and their installation, plus upgrade
or servicing procedures. Compare the kit instructions with this procedure to determine if you
need to modify this procedure.
2. Check TPSSM and repair all reported problems.
3. Perform a complete backup of the drives that you are replacing. You need the backup to
restore data on the drives later in this procedure.
4. Shut down all I/O activity on the enclosure. Make sure the drive activity indicators on the
front are not blinking.
Upgrading Drives
63