Dell PowerEdge RAID Controller H700 - Manual (Page 22)

22 Storage Controller Features
BBU (Backup
Battery Unit)
Optional Optional Yes Optional,
Transportable
Non-Volatile
Cache
Optional Optional No Optional,
Transportable
Cache Memory 512 MB DDR2 or 1
GB DDR2
512 MB
DDR2 or 1
GB DDR2
512 MB
Integrated
DDR2
512 MB DDR2
or 1 GB DDR2
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
8 8 2 8
Maximum
Number of
Virtual Disks
per Disk Group
16 virtual disks per
disk group
16 virtual
disks per disk
group
16 virtual
disks per disk
group
16 virtual disks
per disk group
Multiple
Virtual Disks
per Controller
Up to 64 virtual
disks per controller
Up to 64
virtual disks
per controller
Up to 64
virtual disks
per
controller
Up to 64 virtual
disks per
controller
Support for x8
2.0 PCIe Host
Interface
Yes Yes Yes, x4 PCIe
2.0 for host
operation
Yes
Online
Capacity
Expansion
Yes Yes Yes Yes
Table 3-1. PERC H700 and H800 Card Comparisons
Specification PERC H700 Adapter PERC H700
Integrated
PERC H700
Modular PERC H800
Adapter
PERC7.2_UG.book Page 22 Thursday, March 3, 2011 2:14 PM