HP StorageWorks Enterprise File Services WAN Accelerator 3.0.4 deployment guide (AG421-96001, March 2007)

98 9 - PROXY FILE SERVICE DEPLOYMENTS
NOTE: For Broadcast mode: if you are performing directory moves regularly (for example,
mv ./dir1/dir2 ./dir3/dir2), incremental synchronization will not reflect these directory
changes. You must perform a full synchronization more frequently to keep the PFS shares in
synchronization with the remote site.
NOTE: While performing an incremental synchronization for a Broadcast mode share, if files
are deleted on the server, they are not deleted on the HP EFS WAN Accelerator.
 Local Mode. After the HP EFS WAN Accelerator receives the initial copy, new
data generated by clients is periodically synchronized to the origin server. The
folder on the origin server essentially becomes a back-up folder of the share on
the HP EFS WAN Accelerator. Users must not directly write to this folder on the
origin server. You specify when and how frequently updates (that is,
synchronization) are to occur when you configure a share.
CAUTION: In Local Mode, the HP EFS WAN Accelerator copy of the data is the master copy;
do not make changes to the shared files from the origin server while in Local mode. Changes are
propagated from the remote office hosting the share to the origin server.
NOTE: If you have shares that were created with v2.x of the HP EFS WAN Accelerator
software, the account that starts the HP EFS RCU must have write permissions to the folder on
the origin file server.
NOTE: When you configure a share, a text file (._rbt_share_lock. txt), is created on the origin
server that keeps track of which HP EFS WAN Accelerator owns the share. Do not remove this
file. If you remove the._rbt_share_lock. txt file on the origin file server, PFS will not function
properly. (V3.x Broadcast or Stand-Alone shares do not create these files.)
NOTE: PFS does not support non-domain accounts other than Administrator accounts. If you
create Local mode shares on a non-administrator account, your security permissions for the
share will not be preserved on the origin server.
 Stand-Alone Mode. Provides the branch-office HP EFS WAN Accelerator with a
one time working copy of data mapped from the origin server. You can specify a
remote path to a directory on the origin server, creating a copy at the branch-
office. This data is not synchronized back to the origin server. Users at the branch
office can read or write this share.
PFS provides Windows file service in the HP EFS WAN Accelerator at a remote site.
The proxy file server can export data volumes in Local mode, Broadcast mode, and
Stand-Alone mode.