Acer Altos RAIDWatch, Manual

Page: 87 / 212

Array Management
73
5.3 Operating Without Spare Drives
The following are guidelines for disk failure recovery when a spare drive is not available:
• Depending on the design of the system, it may be possible to remove a defective drive and
replace it with a new drive without shutting down the system (hot-swapping). Alternatively,
the system can be shut down at a convenient time and the system administrator can replace
the failed drive.
• If the replacement drive is installed on the same channel and ID, you can then proceed with
data rebuilding.
• If the replacement drive is installed on a different channel or ID, you need to scan in the new
drive first then assign it as a spare drive of the logical drive which has had a drive failure. Data
rebuilding will have to be manually initiated.
Important Although the RAID system provides uninterrupted disk access even after a disk failure, do not leave
a failed drive unattended to. Without replacement, the system will not survive a second physical
drive failure on the same logical drive. A defective drive must be promptly replaced and data
rebuilt.
Caution When performing hot-swapping, be sure to remove only the defective drive. Removing the wrong
drive will result in complete, unrecoverable data loss. Use the Enclosure window or Physical View
to locate exactly which physical drive has failed.
5.4 Before You Start
Altos RAIDWatch Manager comes with password protection that prevents unauthorized
modification of the disk array configuration. During each attempt at modifying the system
configuration, the configuration will be password protected.
By default, Altos RAIDWatch Manager station comes without any password. For information on
how to set a password and other security features, see section 3.4, ”Secondary Agent Settings”, on
page 36.