Advanced Backup to Disk Performance White Paper

The HP StorageWorks SDLT 320 tape drive is very useful for existing DLT and SDLT-based
environments, particularly for backward-read compatibility.
Figure 3. HP StorageWorks SDLT 320 Tape Drive
The following table shows the major differences:
Table 1. Tape Drive Characteristics
Specification HP StorageWorks
Ultrium 960
HP StorageWorks
Ultrium 460
HP StorageWorks
SDLT 320
Capacity (native) 400 GB 200 GB 160 GB
Transfer rate (native) Up to 80 MB/s Up to 30 MB/s Up to 16 MB/s
Data rate matching 27 – 80 MB/s 10 – 30 MB/s N/A
Host interfaces
Ultra320, 2/4 Gigabit
FC
Ultra160, 2 Gigabit FC Ultra2
Head channels 16 8 16
Number of tracks 704 512 448
Media length 680 m 609 m 560 m
WORM media support Yes No No
Media compatibility
Read
Write
Ultrium Gen. 1, 2, 3
Ultrium Gen. 2, 3
Ultrium Gen. 1, 2
Ultrium Gen. 1, 2
DLTtape IV
Super DLTtape , SDLT
220
7