HP Surestore NAS - Manual (Page 70)

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Other Features
Using Snapshots
A snapshot file system is used to duplicate the contents of a file system at a particular point in
time, much like taking a photographic snapshot. Although files may change in the future, you
have captured the contents of the file at the moment the snapshot was created. This snapshot
copy of your data is read only.
A snapshot file system consists of:
o a super block - logistical information about the snapshot
o a bitmap - indicates if block in original file system has changed
o a blockmap - provides address of data block in snapshot that has a copy of the
original file system block
o data blocks - copies of original contents of changed file system blocks
Snapshots are managed from the command line, not from the NAS GUI. You have the tools to
create snapshots within OnlineJFS, which is included in HP-UX 11i.
To create a snapshot, use:
mount [-F vxfs] -o snapof=source[,snapsize=size] destination
snap_mount_point
Next, create a mount point for the snapshot:
# mkdir /snapmount
Then, mount the snapshot:
With VxVM (Veritas Volume Manager) included in OnlineJFS:
# mount -F vxfs -o snapof=/dev/dsk/datadg/uservol
/dev/vx/dsk/datadg/snapvol /snapmount
Without VxVM:
# mount -F vxfs -o snapof=/dev/dsk/c0t6d0s2 /dev/dsk/c0t5d0s2
/snapmount
NAS Windows 2000 Overview
Overview
HP's CIFS/9000 Server product based upon Samba open source. It is supported only on HP-UX
11 and newer releases. It will follow Samba open source updates as follows:
o March 2000 HP-UX Application Release: Samba 2.0.6
o March 2001 HP-UX Application Release: Samba 2.0.7
o September 2001 HP-UX Application Release: Samba 2.0.9 (planned)
HP includes this CIFS/9000 Server product as a default Distributed File System product on all
HP-UX 11 and later releases. There is no charge for CIFS/9000. On HP-UX 11i and later,
CIFS/9000 is included with the base release OS and is instantly ignitable. Your HP NAS VA
uses HP-UX 11i or later. Setup and configuration scripts are included with the product as well as
an Installation and Administration manual.A major feature of CIFS/9000 Server is the availability
of support options for HP Response Center and HP Worldwide Technology Expert Center