Js12 Express And Js22 Express Configuration Considerations - IBM 170 Servers Manual

14.5.1.3.3 JS12 Express and JS22 Express Configuration Considerations

1. The aggregate total of virtual disks (LUNs) will be sixteen at most. Many customers will
want to deploy between 12 and 16 LUNs and maximize symmetry. Consult carefully with your
support team on the choices here. This is the most important consideration as it is difficult to
change later. Consult also any available Best Practices manuals for a given SAN attached
storage server.
2. The VIOS partition should be provided with between 1 and 2 GB of memory for disk-based
usage's. If virtual LAN is a substantial factor, more memory may be required.
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
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Copyright IBM Corp. 2008 Chapter 14 DASD Performance 228