IBM SAS RAID 5, Manual

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Auxiliary Storage Hardware Resource Detail
Description . . . . . . . . . . . . : Storage IOA
Type-model . . . . . . . . . . . . : 574E-001
Status . . . . . . . . . . . . . . : Operational
Serial number . . . . . . . . . . . : YL3028269C6B
Part number . . . . . . . . . . . . : 0000044V4198
Resource name . . . . . . . . . . . : DC10
Cache size (MB) . . . . . . . . . . : 380
PCI bus . . . . . . . . . . . . . . :
System bus . . . . . . . . . . . : 517
System board . . . . . . . . . . : 0
System card . . . . . . . . . . . : 0
Storage . . . . . . . . . . . . . . :
I/O adapter . . . . . . . . . . . : Not used
I/O bus . . . . . . . . . . . . . : 127
Controller . . . . . . . . . . . :
Device . . . . . . . . . . . . . :
Operating mode . . . . . . . . . . : Primary Storage IOA More...
F3=Exit F5=Refresh F6=Print
F9=Change detail F12=Cancel F14=Dual Storage IOA Configuration
7. Press F14 (Dual Storage IOA Configuration) to view a list of both adapters in the dual storage IOA
pair. This is an example of the display:
Dual Storage IOA Configuration
Type options, press Enter.
2=Change detail
5=Display detail 6=I/O debug
8=Associated packaging resource(s) 9=Resources associated with controlling IOP
Resource Type- Serial
Opt Name Model Status Number Operating Mode
_ DC10 574E-001 Operational YL3028269C6B Primary Storage IOA
_ DC09 574E-001 Operational YL3028270DA0 Secondary Storage IOA
F3=Exit F5=Refresh F6=Print F12=Cancel
8. To see details about each individual adapter, type 5 (Display detail) in front of the adapter that you
want.
For additional details on how to set up a configuration, see Installing dual storage IOA configurations.
Related concepts
“Installing dual storage IOA configurations” on page 28
Use this procedure to help you to install a dual storage IOA configuration.
SAS cabling considerations
Cabling your system correctly is one of the most important aspects of planning for a dual storage I/O
adapter (IOA) configuration.
Follow these guidelines when you cable your system.
v
For RAID configurations on a 5886 EXP 12S disk expansion drawer, X cables provide redundancy for
two wide SAS ports between each controller and disk expansion drawer, and it also provides
redundancy for two narrow SAS ports for each disk drive.
v
For RAID configurations with a 5802 or 5803 PCIe 12X I/O drawer, AT cables are used. SAS topology
is incorporated with in the IO drawer wiring. This provides redundancy similar to X cables.
Chapter 5. Dual storage IOA configurations
25