Table 18-4 summarizes the information in this chapter. It contains an exhaustive list of the types of Unix-compatible storage devices available to you. Some drives, like the 4-mm, 8-mm, CD-R, and M-O drives, are made by a number of manufacturers. The specifications listed for these drives therefore should be considered approximations. Check the actual manufacturer of the drive you intend to purchase for specific information.
Table 18-4. Backup Hardware Comparison
|
Model Name or Generic Name |
Vendor |
Media Type, Comments, (Expected release date) |
H/L |
Capacity (Giga-bytes) |
MB/s |
Avg Load Time (sec) |
Avg Seek Time (sec) |
|---|---|---|---|---|---|---|---|
|
DST 312 |
Ampex |
DST |
H |
50-330 |
15/20 | ||
|
8205XL |
Exabyte et al. |
8-mm |
H |
3.5 |
275 K | ||
|
8505XL |
Exabyte et al. |
8-mm |
H |
7 |
500 K | ||
|
8900—Mammoth |
Exabyte et al. |
AME 8-mm |
H |
20 |
3 |
20 | |
|
DDS-1 |
Various |
Very rare |
H |
1.3 |
250 K | ||
|
DDS-2 |
Various |
DDS |
H |
4 |
510 K |
20 | |
|
DDS-3 |
Various |
DDS |
H |
12 |
1.6 | ||
|
DDS-DC |
Various |
DDS |
H |
2 |
250 K | ||
|
3570—Magstar MP |
IBM |
Midpoint load |
5 |
2.2 | |||
|
3590 |
IBM |
3590 |
10 |
9 | |||
|
3480 |
Various |
3480 |
L |
200 MB |
3 |
13 | |
|
3490 |
Various |
3490 |
L |
600 MB |
3 |
13 | |
|
3490E |
Various |
3490E |
L |
800 MB |
3 |
13 | |
|
DTR-48 |
Metrum |
M-II |
36 |
48 | |||
|
Model 64 |
Metrum |
Super VHS |
27.5 |
64 | |||
|
LMS NCTP |
Plasmon |
3480 3490E |
18 |
10 |
30 |
81 | |
|
DLT 2000XT |
Quantum |
Very rare |
H |
15 |
1.25 |
45 |
45 |
|
DLT4000 |
Quantum |
DLT |
L |
20 |
1.5 |
45 |
68 |
|
DLT7000 |
Quantum |
DLT |
L |
35 |
5 |
40 |
60 |
|
Super DLT |
Quantum |
(Release date unknown) |
100-500 |
10-40 | |||
|
DTF |
Sony |
DTF |
42 |
12 | |||
|
DTF-2 |
Sony |
DTF Will have fiber channel interface (1999) |
H |
100 |
24 |
7 | |
|
DTF-3 |
Sony |
DTF (2000) |
H |
200 |
24 | ||
|
DTF-4 |
Sony |
DTF (200x) |
H |
400 |
48 | ||
|
AIT-1 |
Sony/Seagate |
AIT/AME |
H |
25 |
3 |
7 |
27 |
|
AIT-2 |
Sony/Seagate |
AIT/AME |
H |
50 |
6 |
7 |
27 |
|
AIT-3 |
Sony/Seagate |
AIT/AME (1999) |
H |
100 |
12 | ||
|
AIT-4 |
Sony/Seagate |
AIT/AME (2000) |
H |
200 |
24 | ||
|
4490 |
Storagetek | ||||||
|
9490—Timberline |
Storagetek |
3480 or EETape |
6 |
4.3-5.0 |
10.4 | ||
|
9840 |
Storagetek |
3840/3490E Media Stays in Cartridge |
L |
20 |
10 |
4 |
11 |
|
SD-3—Redwood |
Storagetek |
3490E |
H |
10-50 |
11.1 |
17 |
21-53 |
|
MLR-1 |
Tandberg |
QIC MLR-1 |
L |
16 |
1.5 |
30 |
55 |
|
MLR-3 |
Tandberg |
QIC MLR-3 |
L |
25 |
2 |
30 |
55 |
|
MO 640 |
Fujitsu |
M-O |
128 MB-643 MB |
1-4 |
7 |
28 ms | |
|
MO 540 |
Sony |
M-O |
2.6 | ||||
|
MO 551 |
Sony |
M-O |
5.2 |
5 |
25 ms | ||
|
MO 5200ex |
HP |
M-O |
5.2 |
Write2.3 Read4.6 |
5.5 |
35 ms | |
|
CD-R Spressa 9488 |
Sony |
CD-R |
680 MB |
Write 600 KB |
220 m | ||
|
Read 1.2 MB | |||||||
|
CD-RW 8100i |
HP, JVC, Mitsumi, NEC, Phillips, Panasonic, Ricoh, Sony, Teac, Plextor, Yamaha |
CD-RW CD-R |
680 MB |
CD-R & RW Read 3.6 MB |
7 |
200 m | |
|
CD-R Write 600 KB | |||||||
|
CD-RW Write 300 KB | |||||||
|
DVD-R |
Pioneer |
DVD-R |
4 |
1.3 | |||
|
DVD-RAM |
Matsushita, Toshiba, Hitachi |
DVD-RAM |
2.6 |
1.35 |
120 m | ||
|
DVD-RW |
4.7 | ||||||
|
DVD +RW |
Sony, Phillips, HP, Ricoh, Yamaha, Mitsubishi |
DVD+RW |
3 |