Dell PowerEdge RAID H700 User Manual page 22

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