Nas Shares; Operating System Support; Backup Application Support; Maximum Number Of Nas Shares - HP StoreOnce B6000 Series Manual

3 NAS shares

In this chapter:
Operating system support (page 17)
Backup application support (page 17)
Maximum number of NAS shares (page 17)
Maximum number of files per NAS share and appliance (page 17)
Maximum number of users per CIFS share (page 18)
Maximum number of hosts per NFS share (page 18)
NOTE: It is important to understand that the HP StoreOnce network share is intended to be used
ONLY by backup applications that "back up to disk". Do not use the NAS target device as a
drag-and-drop general file store. The one exception to this rule is if you are using the NAS share
to seed an appliance for replication.

Operating system support

Two interfaces are supported:
a CIFS interface for Windows networks
a NFS interface for Linux and UNIX networks
See the HP StoreOnce Backup System user guide for more information about using the Web
Management Interface to create and configure NAS shares as targets for backup applications.
Refer to the UNIX and Linux Configuration Guide for more information about the NFS interface.

Backup application support

NAS shares may be used with most applications that support backup to disk, including embedded
applications, such as Oracle RMAN and VMWare VCB Agent. For the most up-to-date information
about supported applications, refer to
go/ebs.

Maximum number of NAS shares

The total number of "devices" provided by a StoreOnce appliance is split between VTL devices
and NAS shares. These devices may be all VTL, all NAS or any combination of NAS and VTL
devices.

Maximum number of files per NAS share and appliance

The HP StoreOnce NAS implementation is optimized for use with backup applications. These
applications create large backup files on the NAS share, which make much more efficient use of
deduplication than simply copying files of various sizes to a deduplicating share. To improve
performance for small metadata files created by backup applications and to allow random access
to the header information at the beginning of backup files, the first 24 MB of any backed up file
will not be deduplicated. This non-deduplicated region is called the deduplication threshold.
The HP StoreOnce Backup System imposes a limit on the number of files that can be stored on
each NAS share. The limit is 25000 files, which provides the ability to protect a large amount of
data using a backup application. The limit is imposed in order to allow efficient use of data
replication.
There are also limits on the number of open files greater than the deduplication threshold that are
allowed per share and per appliance. These are the files that hold the backed-up data.
http://www.hp.com/go/connect and http://www.hp.com/
Operating system support 17