HP D2D100 Backup System - Manual (Page 16)

To find out which Ultrium Tape Drive models and HBAs and are supported, refer to
www.hp.com/go/connect .
Software and hardware requirements
Refer to www.hp.com/go/connect for the latest connectivity and compatibility information.
• The HP D2D Backup System should be connected to a Gigabit Ethernet network. 100 Base-T
Ethernet will limit performance; 10 Base-T Ethernet will severely limit performance. For example
network topologies, see “ Supported network configurations ” on page 24.
• For backup and restore you need software that supports tape autoloaders. This software resides
on the host, not the HP D2D Backup System. A CD-ROM containing HP Data Protector Express
software is supplied with the HP D2D Backup System. The device may also be used with the major
backup applications from HP, Symantec, EMC, Computer Associates and others.
• Windows Backup is only supported with standalone tape drives created on the HP D2D Backup
System. It is not supported for use with autoloader backup devices created on the HP D2D
Backup System.
Terminology
Autoloaders
An autoloader is a backup device that has multiple storage slots. Each storage slot contains a cartridge.
This has two advantages over standalone tape drives:
• The overall storage capacity is much greater.
• More importantly, each cartridge can be allocated to a specific backup task; for example,
one cartridge can hold Monday’s data, another can hold Tuesday’s data, and so on. In this
way, backup applications are able to implement tape rotation strategies that accommodate
differing backup requirements for daily, weekly, monthly, yearly backups. Please see
“ Backup scenarios using the HP D2D Backup System ” on page 55 for worked examples.
Backup devices and slots
Backup devices appear to the host as locally-attached tape devices, but physically, they use disk space on
the HP D2D Backup System which, as in tape terminology, is referred to as slots or cartridges.
Depending on your data protection strategy, you may configure each backup device as a standalone HP
StorageWorks Ultrium Tape Drive or, more typically, as an HP StorageWorks 1x8 G2 Tape Autoloader
with attached Ultrium Tape Drive.
• When you configure your HP D2D Backup System with a standalone tape drive, 200 GB of
physical disk space is made available for that tape drive. This is the equivalent of a permanently-
mounted 200 GB tape cartridge, which cannot be unloaded. Tape spanning is impossible, so the
data to be backed up must not exceed 200 GB.
• When you configure your HP D2D Backup System with a tape autoloader, up to 200 GB of
physical disk space can be made available for each configured slot. This is the equivalent of an
autoloader with multiple slots, each containing a 200 GB cartridge. Both tape spanning and,
more importantly, flexible tape rotation strategies are possible.
Hosts
Each emulated tape device is uniquely mapped to an individual host; this is the network server or
PC that you wish to back up.
• The tape device appears to the host as a locally-attached tape autoloader or tape drive.
• The tape device is accessed and managed from the backup software running on the host.
• The tape device is not visible to other devices on the network.
16 Before you start