IBM SAS RAID controllers, Manual

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Related concepts :
“Dual storage IOA configurations” on page 22
You can increase availability using a dual storage I/O adapter (IOA) configuration to connect multiple
controllers to a common set of disk expansion drawers and the included disks and disk arrays.
“Dual storage IOA functions” on page 23
Consider these factors when using dual storage I/O adapter (IOA) functions.
Related information :
SAS subsystem for the 8202-E4B or 8205-E6B
SAS subsystem for the 8231-E2B
PCIe SAS RAID card comparison
Use the tables in this topic to compare the features of the various PCI Express (PCIe) SAS RAID cards for
IBM i. There are also images of adapters for you to view.
Table 2. PCIe SAS RAID controller card comparison
Features 2B4C 574E 57B3 57B7
Description PCIe x4 Internal 3 Gb SAS
RAID adapter PCIe x8 Ext Dual-x4 3 Gb
SAS RAID adapter PCIe x8 Ext Dual-x4 3 Gb
SAS adapter PCIe x1 Auxiliary Cache
adapter
Form factor Planar unique PCIe PCIe x8 PCIe x8 Planar Auxiliary Cache
Physical links 6 (two 2x wide ports to
shared SAS drives and one
2x wide port to 57CB) 8 (two mini SAS 4x
connectors) 8 (two mini SAS 4x
connectors) 2
RAID levels supported RAID 5, RAID 6, system
mirroring RAID 5, RAID 6, system
mirroring RAID 5
1
, RAID 6
1
, system
mirroring
Write cache size 175 MB 380 MB 175 MB
Read cache size
Cache battery pack technology Lithium ion Lithium ion Lithium ion
Cache battery concurrent
maintenance No Yes No Yes
Cache data present LED Yes Yes No Yes
Removable cache card No Yes No No
Figure 5. CCIN 2BD9 PCI-X266 Planar 3 Gb SAS RAID adapter
SAS RAID controllers for IBM i
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