Dell PERC 4/DC - Manual (Page 51)

Table 2 -4 lists the drive roaming features for the RAID controller.
Table 2-4. Features for Drive Roaming
Drive Migration
Drive migration is the transfer of a set of hard drives in an existing configuration from one controller to another. The drives must remain on the same channel
and be reinstalled in the same order as in the original configuration.
Hardware Architecture Features
Table 2 -5 displays the hardware architecture features for the RAID controller.
Table 2-5. Hardware Architecture Features
LED Operation
The LED on the system displays the data for a PV Dell enclosure connected a PERC 4/DC RAID controller. Table 2 -6 displays the normal operation mode after
you remove a physical drive and place it back in the slot.
Table 2-6. LED Operation
Array Performance Features
Table 2 -7 displays the array performance features for the RAID controller.
Specification PERC 4/SC PERC 4/DC
Online RAID level migration Yes Yes
RAID remapping Yes Yes
No reboot necessary after capacity extension Yes Yes
NOTE: Drive roaming and drive migration cannot be supported at the same time. PERC can support either drive roaming or drive migration at any one
time, but not both at the same time.
Specification PERC 4/SC PERC 4/DC
Processor Intel GC80302 (Zion Lite) Intel GC80303 (Zion)
SCSI controller(s) One LSI53C1020 Single SCSI controller One LSI53C1030 Dual SCSI controller
Size of flash memory 1 MB 1 MB
Amount of NVRAM 32 KB 32 KB
Hardware exclusive OR (XOR) assistance Yes Yes
Direct I/O Yes Yes
SCSI bus termination Active or LVD Active or LVD
Double-sided dual inline memory modules (DIMMs) Yes Yes
Support for hard drives with capacities of more than eight gigabytes (GB) Yes Yes
Hardware clustering support on the controller No Yes
Controller/ System Physical Drive
State Virtual Disk
State Physical Drive
State Virtual Disk
State Status LED Blink Pattern
PV Dell enclosure attached to PERC 4/DC
online
Online Ready Rebuilding Degraded Only reinserted disk blinks during
rebuild