3.6.1 HP PolyServe Matrix Server Administration Guide (T5392-96018, August 2008)

Chapter 9: Configure PSFS Filesystems 109
The -o option has the following parameters:
• blocksize=#
Specify the block size (either 4096 or 8192) for the filesystem. If you are
using HP PolyServe Software for Microsoft SQL Server, the block size
must be 8192.
• disable-fzbm
Create the filesystem without Full Zone Bit Maps (FZBMs). The FZBM
on-disk filesystem format reduces the amount of data that the
filesystem needs to read when allocating a block. It is particularly
useful for speeding up allocation times on large, relatively full
filesystems. For details about FZBM, see the HP support document
“Using the FZBM On-Disk Filesystem Format” on the HP web site.
• enable8dot3
Create the filesystem with support for 8.3 short file names and name
tunneling enabled. These features should be enabled only if you have
a specific need for them, as the use of 8.3 files causes degradation in
filesystem performance. The degradation is proportional to the
number of 8.3 files created. If 8.3 SFN support is later disabled but 8.3
filenames exist, the performance degradation will continue.
•allowextchar
Allow the extended character set to be used in 8.3 short file names.
The -o enable8dot3 option must also be specified.
• enable-quotas
Enable quotas on the filesystem.
The following options can be used with enable-quotas:
• default=<size>[K|M|G|T]
Set the default hard quota on the filesystem. (The default is rounded
down to the nearest filesystem block.) The <size> argument can
include one of the following optional modifiers to specify the unit: K
(kilobytes), M (megabytes), G (gigabytes), or T (terabytes). If one of
these modifiers is not specified, the <size> will be interpreted in bytes.
If the default quota limit is not specified on the command line, the
limit will be set to 0, which means there is no default limit.