When you install the Oracle Solaris OS, ensure that you create the required Oracle Solaris Cluster partitions and that all partitions meet minimum space requirements.
The Oracle Solaris Cluster software itself occupies less than 40 Mbytes of space in the root (/) file system.
Each Oracle Solaris Cluster data service might use between 1 Mbyte and 5 Mbytes.
Solaris Volume Manager software requires less than 5 Mbytes.
To configure ample additional space and inode capacity, add at least 100 Mbytes to the amount of space you would normally allocate for your root ( /) file system. This space is used for the creation of both block special devices and character special devices used by the volume management software. You especially need to allocate this extra space if a large number of shared disks are in the cluster.
You need to set aside ample space for log files. Also, more messages might be logged on a clustered node than would be found on a typical stand-alone server. Therefore, allow at least 100 Mbytes for log files.
/var – The Oracle Solaris Cluster software occupies a negligible amount of space in the /var file system at installation time. However, you need to set aside ample space for log files. Also, more messages might be logged on a clustered node than would be found on a typical stand-alone server. Therefore, allow at least 100 Mbytes for the /var file system.
swap – The combined amount of swap space that is allocated for Oracle Solaris and Oracle Solaris Cluster software must be no less than 750 Mbytes. For best results, add at least 512 Mbytes for Oracle Solaris Cluster software to the amount that is required by the Oracle Solaris OS. In addition, allocate any additional swap amount that is required by applications that are to run on the Oracle Solaris host.
To support Solaris Volume Manager, you can create this partition on one of the following locations:
A local disk other than the ZFS root pool
The ZFS root pool, if the ZFS root pool is on a partition rather than a disk
Set aside a slice for this purpose on each local disk. However, if you have only one local disk on an Oracle Solaris host, you might need to create three state database replicas in the same slice for Solaris Volume Manager software to function properly. See Solaris Volume Manager Administration Guide for more information.
To meet these requirements, you must customize the partitioning if you are performing interactive installation of the Oracle Solaris OS.