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Summary, Figure 34 – HP D2D100 Backup System User Manual

Page 61

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After configuration, the host has access to two devices on the HP D2D Backup System.

Wk1
Wk1
Wk2
Wk2
Wk3
Wk3
Wk4
Wk4

Mon
Tues
Wed

Thurs

HP StorageWorks D2D Backup System: 1.5 TB

LAN

Total

1.04 TB

Total

60 GB

Approx capacity

used = 1.1 TB

Graphics
workstation
250 GB

Figure 34 HP D2D Backup System with one host and two devices

Summary

Main backup to autoloader requires

1040 GB

Additional backup to tape drive

requires

60 GB

Approximate capacity required =

1.1 TB

This is within the capacity of the HP D2D Backup System 130 and 120.

Incorporating archive to tape into a rotation strategy

Two methods are provided for archive a cartridge to the directly attached tape device, these are Copy

and Export.

Copy retains the data cartridge on the HP D2D system and creates an exact copy onto a physical

cartridge in the attached tape drive.

Export removes the data cartridge from the autoloader on the D2D once data has been

successfully copied to the physical cartridge in the attached tape drive.

Each method has advantages and disadvantages, as described in more detail in

Archiving methods

” on page 84. Refer also to the white papers on

httP://www.hp.com/support

for

examples of using these functions with specific backup applications.
This example shows how to incorporate copy to a tape drive connected to the HP D2D Backup System

into a tape rotation strategy.

On Friday: carry out a full backup to one cartridge to capture the week’s work and keep that

cartridge for four weeks before overwriting. Assuming a separate cartridge for each week’s full

backup, four autoloader slots are required.

D2D Backup System

61