Planning and Layout of Disks

The metaset(1M) command repartitions drives in a diskset so that a small portion of each drive is reserved in Slice 7 for use by Solstice DiskSuite. The remainder of the space on each drive is placed into Slice 0. To make more effective use of the disk, use the procedure in this section to modify the disk layout.

How to Repartition Drives in a Diskset

1. Use the format(1M) command to change the disk partitioning for the majority of drives as shown in Table B-2.

   Table B-2 Multihost Disk Partitioning for Most Drives

   Slice	Description
   7	2 Mbytes, reserved for Solstice DiskSuite
   6	UFS logs
   0	remainder of the disk
   2	overlaps Slices 6 and 0

   In general, if UFS logs are created, the default size for Slice 6 should be 1 percent of the size of the largest multihost disk found on the system.

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   Note -

   The overlap of Slices 6 and 0 by Slice 2 is used for raw devices where there are no UFS logs.

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2. Partition a drive on each of the first two controllers in each of the disksets as shown in Table B-3.

   In the following table, we partition the first drive on the first two controllers as shown. You are not required to use the first drives or the first two controllers, if you have more than two.

   Table B-3 Multihost Disk Partitioning-First Drive, First Two Controllers

   Slice	Description
   7	2 Mbytes, reserved for Solstice DiskSuite
   5	2 Mbytes, UFS log for HA administrative file systems
   4	9 Mbytes, UFS master for HA administrative file systems
   6	UFS logs
   0	remainder of the disk
   2	overlaps Slices 6 and 0

Partition 7 should be reserved for use by Solstice DiskSuite as the first 2 Mbytes on each multihost disk.