Dell 6 series, User Manual

Page: 22 / 160

22
About PERC 6 and CERC 6/i Controllers
Battery
Backup Unit Yes,
Transportable Yes
b
Yes No
Cache
Memory 256-MB
DDRII cache
memory size.
Optional
512-MB
DIMM
256-MB DDRII
cache memory
size 256-MB DDRII
cache memory
size 128-MB
DDRII
cache
memory
size
Cache
Function Write-Back,
Write-Through,
Adaptive
Read Ahead,
No-Read
Ahead,
Read Ahead Write-Back,
Write-Through,
Adaptive
Read Ahead,
No-Read Ahead,
Read Ahead Write-Back,
Write-Through,
Adaptive
Read Ahead,
No-Read Ahead,
Read Ahead Write-Back,
Write-
Through,
Adaptive
Read
Ahead,
No-Read
Ahead,
Read Ahead
Maximum
Number of
Spans per
Disk Group Up to 8 arrays Up to 8 arrays Up to 8 arrays Up to 2
arrays
Maximum
Number of
Virtual Disks
per Disk
Group Up to 16
virtual disks
per disk group
for non-
spanned RAID
levels: 0, 1, 5,
and 6.
One virtual
disk per disk
group for
spanned RAID
levels: 10, 50,
and 60.
Up to 16 virtual
disks per disk
group for non-
spanned RAID
levels: 0, 1, 5,
and 6.
One virtual disk
per disk group
for spanned
RAID levels: 10,
50, and 60.
Up to 16 virtual
disks per disk
group for non-
spanned RAID
levels: 0, 1, 5,
and 6.
One virtual disk
per disk group
for spanned
RAID levels: 10,
50, and 60.
Up to 16
virtual disks
per disk
group for
non-
spanned
RAID
levels: 0, 1,
5, and 6.
One virtual
disk per
disk group
for spanned
RAID
level 10.
Table 3-1. PERC 6 and CERC 6/i Controller Comparisons (continued)
Specification PERC 6/E
Adapter PERC 6/i Adapter PERC 6/i
Integrated CERC 6/i
Integrated
Dell_PERC6.2_UG.book Page 22 Wednesday, June 24, 2009 6:08 PM