Optimization Type

The optimization type parameter is set to either space or time.

• Space – When you select space optimization, disk blocks are allocated to minimize fragmentation and disk use is optimized.

• Time – When you select time optimization, disk blocks are allocated as quickly as possible, with less emphasis on their placement. When sufficient free space exists, allocating disk blocks is relatively easy, without resulting in too much fragmentation. The default is time.

  You can change the value of the optimization type parameter for an existing file system by using the tunefs command.

For more information, see tunefs(1M).