HP StorageWorks Clustered File System (software-only) 3.6.1 Windows Storage Server Edition upgrade guide (T4422 - 96001, August 2008)

Chapter 5: Post-Upgrade Steps 35
Upgrade Filesystems for Alternate Data Streams
(ADS)
HP Clustered File System 3.6.1 provides filesystem support for ADS. This
support is enabled by default in PSFS filesystems created on HP
Clustered File System 3.6.1. PSFS filesystems created on HP Clustered
File System 3.6.0 or earlier releases must be upgraded to enable ADS
support. When ADS support is enabled on a filesystem, it cannot be later
disabled.
The filesystem is upgraded with the psfscheck command, which enables
this feature internally on the filesystem. Consequently, a brief,
cluster-wide outage of the filesystem is required during the upgrade. (If
8.3 support is also needed, both features can be enabled at the same time
as described in the next section.)
NOTE: The ADS upgrade is required for all pre-3.6.1 filesystems that will
be used with HP PolyServe Software for Microsoft SQL Server and
is strongly recommended for all filesystems.
To upgrade a PSFS filesystem for ADS support, take the following steps:
1. Stop all applications using the filesystem.
2. Run the following command at the Command Prompt (the command
is shown on two lines for readability):
%SystemDrive%\Program Files\MatrixServer\bin\psfscheck -e
enableads <device>
The device can be specified in several ways:
• By the drive letter, such as X:
• By the mount point (junction), such as C:\san\vol2
• By the psd or psv name, such as psd2p2 or psv3
3. Restart the applications that use the filesystem.
Upgrade Filesystems for 8.3 SFN Support If Needed
By default, PSFS filesystems do not support the creation of 8.3 short file
names (SFN) and name tunneling. Filesystems should be upgraded only