Hardware Restrictions

Note the following hardware-related restrictions.

• A pair of Sun Cluster nodes must have at least two multihost disk enclosures, with one exception: if you use Sun StorEdge A3x00 disks, you can use only one.

• The SS1000 and SC2000 hardware platforms are supported with Sun Cluster 2.2 on only Solaris 2.6. This restriction is due to the removal of support for the SFE 1.0 be(7D) driver on versions of Solaris later than 2.6. The SFE 1.0 be(7D) driver is used for the cluster interconnect on the SS1000 and SC2000 machines.

• You cannot mix UDWIS/DWIS and SCI controllers on the same I/O board.

• The following restrictions apply only to Ultra 2 Series configurations:

  • The Sun Cluster node must be reinstalled to migrate from one basic hardware configuration to another. For example, a configuration with three FC/S cards and one SQEC card must be reinstalled to migrate to a configuration with two FC/S cards, one SQEC card, and one SFE or SunFDDI^(TM) card.

  • Dual FC/OMs per FC/S card is supported only when used with the SFE or SunFDDI card.

  • In the SFE or SunFDDI 0 card configuration, the recovery mode of a dual FC/OM FC/S card failure is by a failover, not by mirroring or hot sparing.

For more information about Sun Cluster 2.2 hardware considerations and procedures, see the Sun Cluster 2.2 Hardware Site Preparation, Planning, and Installation Guide and Sun Cluster 2.2 Hardware Service Manual.