Dell PERC 4/DC User Manual download pdf (Page 52)

Table 2-7.ArrayPerformanceFeatures



Fault Tolerance Features



Table2-8 describes the fault tolerance capabilities of the RAID controller.



Table 2-8.FaultToleranceFeatures



Software Utilities



Table2-9 describes the features offered by the utilities used for RAID management. See "RAID Management Utilities" in this section for descriptions of the

utilities.



Table 2-9.SoftwareUtilitiesFeatures



Operating System Software Drivers



Operating System Drivers



Drivers are provided to support the controller on the following operating systems:

l Microsoft®Windows NT®

l Windows®2000

l Windows 2003

l Novell®NetWare®

Specification

PERC 4/SC and PERC 4/DC

PCI host data transfer rate

532 MB/sec

Drive data transfer rate

Up to 320 MB/sec

Maximum size of I/O requests

6.4 MB in 64 KB stripes

Maximum queue tags per drive

As many as the drive can accept

Stripe sizes

2 KB, 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB



NOTE: Using a 2 KB or 4 KB stripe size is not recommended.

Maximum number of concurrent commands

255

Support for multiple initiators

Only on PERC 4/DC

Specification

PERC 4/SC

PERC 4/DC

Support for SMART

Yes

Optional battery backup for cache memory

N/A

Yes. Up to 72 hours data retention for 64 MB cache memory (less for larger cache memory).

Drive failure detection

Automatic

Drive rebuild using hot spares

Automatic

Parity generation and checking

Yes

User-specified rebuild rate

Yes

Specification

PERC 4/SC

PERC 4/DC

Management utility

Yes

Bootup configuration using the PERC BIOS Configuration Utility (Ctrl–M)

Yes

Online read, write, and cache policy switching

Yes

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