i.
ii.
iii.
copies of backup images.
* For legacy D2D backup systems (EJ001A, EJ002A, EH938A, EH939A, EH941A, EH942A, EH999A), the
addition of NAS as a target for backup is limited to the CIFS protocol, suitable for use in Windows-only
environments. Earliest legacy systems used authentication models for the CIFS protocol of "no
authentication" or "local user level authentication". There was no support for Microsoft Active Directory
authentication. However support for Microsoft Active Directory authentication is available on legacy
systems via a free firmware upgrade by following the "Support & Drivers" link on
www.hp.com/go/d2d
or
by following the "HP Support & Drivers" link from:
www.hp.com
EJ001C, EJ002C, EH993C EH996B,
EH998B, EH985A and EH983B support CIFS, with Microsoft Active Directory authentication and NFS
protocols.
Differences between using a NAS or a VTL target for the HP StoreOnce Backup system
For customers already familiar with or who plan to continue using tape automation in their backup
environment, using VTL as a target for backup applications for the HP StoreOnce Backup system can
provide some key advantages including:
Ensuring best backup performance.
The ability to leverage tape automation licensing that may already be in use with your backup
application.
Customers who are more familiar with using file systems, and for those customers who may be moving
away from using tape backup, may find using the StoreOnce Backup system as a NAS target provides a
simpler way to configure their backup. Using the StoreOnce system as a NAS target for backup can also
provide some key advantages including:
No need for additional backup application licensing as most mainstream backup application and
integrated backup agents include support for backup to CIFS and NFS devices.
No need for expertise in traditional backup methods as backup to a file share provides a simple
method for backup.
An easily adaptable backup methodology for remote offices where local tape backup will not be
deployed and IT resources are limited.
While using the StoreOnce Backup system as a NAS target for backup may provide a simple method for
backup and recovery, there are a number of additional considerations one must be aware of when
implementing this methodology including:
There is a restriction on the number of backups each file share can accept concurrently. This varies
based on the backup application being used and what data type is being backed up. Please refer to
the HP StoreOnce Backup systems Best Practices Guide for additional details.
Deduplication will occur on any backup file that is greater than 24 MB. Backup applications may also
create some small files during a backup job, these will not be deduplicated in order to ensure
maximum performance and random access.
NAS targets on the StoreOnce system are designed to be accessed for backup as such a file may
only be accessed by a single user at a time - multiple users are not permitted to access the same file
simultaneously.
There are significant differences between using a general NAS device and an HP StoreOnce Backup system
with a NAS target for backup applications.
The HP ProLiant Storage Server family of NAS appliances provide general disk file share and protection for
QuickSpecs
HP StoreOnce Backup systems
Features and Benefits
DA - 13218 Worldwide — Version 18 — September 28, 2012
Page 9
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