Dell DC, 3, User Manual

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PERC 3/SC Features 55
SMART Technology
The PERC 3/SC self-monitoring analysis and reporting technology
(SMART) detects predictable drive failures. SMART monitors the internal
performance of all motors, heads, and drive electronics.
Configuration on Disk Configuration
NOTE:
Configuration on
Disk does not work if you
change both the adapter,
and the SCSI connectors
to different connectors on
the new adapter. It will
work only if you make one
change at a time.
Configuration on Disk (drive roaming) saves configuration information
both in non-volatile random access memory (NVRAM) on PERC 3/SC and
on the disk drives attached to PERC 3/SC. If the controller is replaced, the
new controller detects the actual RAID configuration from the
configuration information on the drives. This maintains the integrity of the
data on each drive, even if the drives have changed their target ID.
Drive roaming is supported across channels on the same controller. Drive
roaming across channels is
not supported when cluster mode is enabled.
Table 4-2 lists the Configuration on Disk features for the PERC 3/SC
controller.
Non-disk devices supported No
Mixed capacity hard disk drives Yes
Number of 16-bit internal connectors 1
Ta b l e 4 - 1 . C o n f i g u r a t i o n Fe a t u r e s
(continued)
Specification Feature
Ta b l e 4 - 2 . C o n f i g u r a t i o n o n D i s k Fe a t u r e s
Specification Feature
Support for hard disk drives with
capacities of more than 8 gigabytes (GB)
Yes
Online RAID level migration Yes
RAID remapping Yes
No reboot necessary after expansion Yes (only if virtual sizing is
enabled)
More than 200 qtags per array Yes
Hardware clustering support on the board Yes