Before You Start; Overview; Nas Targets For Backup Applications; Virtual Tape Library Targets For Backup Applications - HP D2D Manual

1 Before you start

In this chapter:

Overview

NAS targets for backup applications

Virtual Tape Library targets for backup applications

Comparing NAS and VTL targets
Connecting to the HP StoreOnce Backup System
For more information
Overview
The HP StoreOnce Backup System is a disk-based storage appliance for backing up host network
servers or PCs to target devices on the appliance. These devices are configured as either
Network-Attached Storage (NAS) or Virtual Tape Library (VTL) targets for backup applications.
The total number of backup targets provided by an HP D2D Backup System is split between VTL
and NAS devices and varies according to model.
These devices may be all VTL, all NAS or any combination of NAS and VTL devices. All HP
StoreOnce devices automatically make use of StoreOnce deduplication, ensuring efficient and
cost-effective use of disk space.
NAS targets for backup applications
Support for both CIFS and NFS protocols means that NAS target devices may be created as backup
targets for both Windows and UNIX/Linux hosts, and may be used with most backup applications
that support backup to disk. NAS targets on an HP D2D Backup System provide network file share
access that is optimized for backup to disk. They should not be used for general purpose file
storage.
Virtual Tape Library targets for backup applications
The backup target appears to the host as an Ultrium Tape Library and requires a backup application
that supports backup to tape. Tape Library emulation type is selected during initial configuration
and this determines the number of cartridge slots and embedded tape drives that may be configured
for the device.
Virtual Tape Libraries provide considerable flexibility for a variety of backup rotation schemes.
The HP D2D4100 and D2D4300 Series may be configured with iSCSI and Fibre Channel (FC)
devices. (The HP D2D4106i Backup System does not support FC.) The HP D2D2500 Series is
configured with iSCSI devices.
The default configuration emulates:
HP D2D2500 Series: HP StorageWorks 1/8 G2 Ultrium Tape Autoloader
HP D2D4100 and D2D4300 Series: HP StorageWorks MSL2024 Tape Library
Overview 5