Ta b l e 4 - 1 . C on f i g u r a t i o n Fe at ur e s (continued)

Specification

Feature

 

 

Non-disk devices supported

No

 

 

Mixed capacity hard disk drives

Yes

 

 

Number of 16-bit internal connectors

1

 

 

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

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.

Ta b l e 4 - 2 . C o nf i g u r a t i o n o n D i s k Fe at u r e s

Specification

Feature

 

 

Support for hard disk drives with

Yes

capacities of more than 8 gigabytes (GB)

 

 

 

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

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.

PERC 3/SC Features

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Dell 3 manual Smart Technology, Configuration on Disk Configuration, Ta b l e 4 1 . C on f i g u r a t i o n Fe at ur e s