HP D2D110 HP StorageWorks D2D Backup System User Guide (EH880-90950, October 2 - Page 61

Summary, Incorporating archive to tape into a rotation strategy

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After configuration, the host has access to two devices on the HP D2D Backup System. Graphics workstation 250 GB LAN Mon Tues Wed Thurs Wk1 Wk1 Wk2 Wk2 Wk3 Wk3 Wk4 Wk4 Total 1.04 TB Total 60 GB HP StorageWorks D2D Backup System: 1.5 TB Approx capacity used = 1.1 TB 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

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After con
fi
guration, 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
h
t
t
P
:
/
/
w
w
w
.
h
p
.
c
o
m
/
s
u
p
p
o
r
t
for
examples of using these functions with speci
fi
c 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