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4.5.1. Storage concepts for JS12 and JS22 in BladeCenter S
The following diagram presents an overview of storage, optical and tape virtualization for IBM i on
JS12 and JS22 in BladeCenter S:
JS12 and JS22 use the CFFv SAS expansion adapter to access the following storage resources:
•
SAS drives in BCS and/or LUNs from DS3200 if there is at least one non-RAID SAS
module present in the chassis
•
LUNs from one or more RAID arrays internal to the chassis require both RAID SAS
modules to be present
Once SAS drives or LUNs have been assigned to the Power blade, they become available in
VIOS as hdiskX devices. VIOS then virtualizes each hdiskX disk directly to the IBM i client
partition(s), exactly as with LUNs in the BladeCenter H. Each virtualized SAS drive or LUN is
recognized and used in IBM i as a DDxx physical drive. If both internal drives are ordered on the
JS12, they will be recognized by VIOS as hdisk0 and hdisk1. The internal drives on the blade are
used for VIOS and are not virtualized to IBM i client LPARs. Access to the DVD-ROM drive in the
BladeCenter S is also provided by VIOS, as with the BladeCenter H.
4.5.2. Storage concepts for JS23, JS43, PS700, PS701 and PS702 in BladeCenter S
JS23, JS43, PS700, PS701 and PS702 follow the same storage concepts as the JS12 and JS22
in BladeCenter S, with the exception of the CFFv expansion adapter; instead, they use the CIOv
expansion card. The following diagram presents an overview of storage, optical and tape
virtualization for IBM i on JS23, JS43, PS700, PS701 and PS702 in BladeCenter S:
