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
5
Содержание SAS RAID controllers
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