HP D2D100 Backup System - Manual (Page 58)

HP StorageWorks D2D Backup System: 1.5 TB
LAN
Desktop PC
250 GB Fileserver
60 GB
Total
242 GB
Total
150 GB
Mon
Tues
Wed
Thurs
Wk1
Wk2
Wk3
Wk4
M5
M6
M7
M8
M9
M10
M11
M12
Wk1
Wk2
Wk3
M1
M2
M3
M4
Database
Server
10 GB
Figure 31 HP D2D Backup System after the second host is configured
Desktop PC
This is used by engineers to store drawings, specifications and similar working documents. The backup
requirement is for one full weekly backup and a daily incremental backup, retained for one week.
The size of the daily incremental backup is 10 GB. The size of the full backup is 250 GB, which
exceeds the disk space that can be allocated to a single slot. Therefore, each full backup requires
two autoloader slots.
Number of slots required
Physical disk space required on HP D2D Backup
System
1 x 2 for the full weekly backup
4 x 1 for the incremental daily backups 1 x 250 = 250 GB
4 x 10 GB = 40 GB
6 slots required (8 is the minimum that can be
assigned)
290 GB
58 Backup scenarios using the HP D2D Backup System