DELL PERC 4E U320 PCI-E SCSI RAID CONTROLLER CARD 0TD977

RAID levels

0, 1, 5, 10, and 50

SCSI channels

2

Array interface to host

PCI Express Rev. 1.0a

Storage interface

SCSI U320

Cache memory size

128 MB SDRAM

Cache function

Write-back, write-through, adaptive read-ahead, non read-ahead, read-ahead

Cache battery backup

Yes

Number of logical drives and arrays supported

Up to 40 logical drives and 32 arrays per controller

Maximum logical drive size supported

2 TB for all RAID levels (0, 1, 5, 10, and 50)

Online capacity expansion

Yes

Hot spares

Yes

Flashable firmware

Yes

Hot swap devices supported

Yes

Non-disk devices supported

NOTE: PERC 4 does not support any non-disk devices except backplanes.

Only SAF-TE and SES

Mixed capacity hard drives

Yes

Number of 16-bit internal connectors

2

Number of 16-bit external connectors

2

Cluster support

Yes