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Ultra Enterprise Cluster HA does not support the use of the loopback file
system (lofs) on the Ultra Enterprise Cluster HA servers.
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Do not run, on either server, any processes that run in the real-time
scheduling class.
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Ultra Enterprise Cluster HA does not support Secure NFS or the use of
Kerberos with NFS. In particular, the 'secure' and 'kerberos' options to
share_nfs(1M) are not supported.
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The HA administrative file system cannot be grown using the DiskSuite
growfs(1M) command. Refer to “Planning Your Multihost File System
Hierarchy” on page 3-7 for additional information.
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The network time protocol (NTP) is not supported on Ultra Enterprise
Cluster HA systems.
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A pair of SPARCcluster HA server nodes must have at least two multihost
disk expansion units.
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Solstice HA supports at most two logical hosts. Each logical host has exactly
one Solstice DiskSuite diskset.
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The two machines connected to the shared disks must be symmetric.
Specifically, the shared disks must have the same:
• /dev/rdsk/cntndn name
• driver name, i.e., “ssd”
• major/minor number as displayed by ls -lL /dev/rdsk/cntndnsn.
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File system quotas are not supported.
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HA-NFS requires that all NFS client mounts be “hard” mounts.
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Logical network interfaces are reserved for use by Solstice HA.
Because Ultra Enterprise Cluster HA requires mirroring, the RAID 5 feature
in the Solstice DiskSuite product is not supported.
For HA-NFS, do not use host name aliases for the logical hosts. NFS clients
mounting HA file systems using host name aliases for the logical hosts
might experience statd lock recovery problems.
Sun Prestoserve™ is not supported. Prestoserve works within the host
system, which means that any data contained in the Prestoserve memory
would not be available to the HA sibling in the event of a switchover.
Configuration Planning
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