freeStor Xpand 1500C User’s Manual
9
Figure 1-1: Volume Sets in a RAID Set
Hot Spare Drives
A hot spare drive is an unused but operational hard drive which is in stand-by mode to replace
an existing disk drive when it fails. In RAID level 1, 0+1, 3, or 5 RAID sets, any unused,
available drive not belonging to a RAID set can defined as a hot spare drive. Hot spares allow
you to replace failed drives automatically without powering down the system. When the RAID
controller detects a drive failure, the system will automatically and transparently rebuild the
RAID using hot spare drives. The RAID set will be reconfigured and rebuilt in the background,
while the RAID controller continues to handle system requests. During the automatic rebuild
process, system activity will continue as normal, however the system performance and fault
tolerance will be negatively impacted.
Note:
The hot spare drive must be the same size as or larger than the disk drive
it replaces.
1.5 Unpacking the Unit
Before removing the freeStor Xpand 1500C from the carton, thoroughly inspect the physical
condition of the box. If the packaging is damaged, do not remove any components and contact
your reseller.
If the carton appears to be in good condition, unpack it and check that the freeStor Xpand
1500C and all of the accessories listed below are included and are in good condition.
The freeStor Xpand 1500C includes the following items in the box:
Item Qty
freeStor Xpand 1500C disk array
1
Drive Canister
15
Ultra320 SCSI Cable
2
Power Cord
2
RS-232 Cable
1
Spare Hard Drive Screws
40
Ultra320 SCSI Terminator
1
User’s Manual CD
1
If an item is missing or damaged, contact your reseller for assistance.