
28 IBM ^ Cluster 1600 Managed by PSSP 3.5: What’s New
drawer with 20 hot plug-enabled PCI slots and up to 16 disks connected to 4
integrated Ultra 2 SCSI controllers is included. Up to two additional I/O drawers
can be connected, as well as a battery backup feature. When running in a cluster
with an SP Switch or an SP Switch2, 32 servers and 4 LPARs per cluster are
supported. 16 LPARs are supported in each p670 when using industry standard
interconnect, or if you have 12 LPARs off the switch in an SP Switch2
environment. See Appendix A, “Cluster 1600 scalability rules” on page 177 for
more scaling rules. Up to eight p670s can be managed with ...