Tape Drive Data Transfer Rates Capacities Comparison
Comparison of tape drive transfer rates, capacities, and access times for ITIL Capacity Management. This information can be very helpful in determining which drive technology you need, but never forget these are all theoretical numbers and are given without taking into account the internal drive compression. Drive manufacturers advertise compression rates for the different drive technologies. These vary depending on the drive but are also theoretical numbers. These specifications can change with new firmware levels or versions of the drives.
| DRIVE | THEORETICAL TRANSFER RATE GB/HR (NO COMPRESSION) | THEORETICAL CAPACITIES GB (NO COMPRESSION) | ACCESS TIME EXCLUDING LOAD TIME | COMPRESSION |
| 4mm(HPDDS-2) | 1.8 | 4 | ||
| 4mm(HPDDS-3) | 3.6 | 12 | ||
| Mammoth | 11 | 20 | 60sec | 2:01 |
| Mammoth-2 | 42.4 | 60 | 60sec | 2:01 |
| DLT4000 | 5.4 | 20 | 68sec | 2:01 |
| DLT7000 | 18 | 35 | 60sec | 2:01 |
| DLT8000 | 21.5 | 40 | 60sec | 2:01 |
| SDLT | 39.6 | 110 | 70sec | 2:01 |
| 9840 | 36 | 20 | 11sec | 2.5:1 |
| 9940 | 36 | 60 | 41sec | 3.5:1 |
| LTO | 52.7 | 100 | 25sec | 2:01 |
| AIT-2 | 21.1 | 50 | 27sec | 2.6:1 |
| AIT-3 | 42 | 100 | 27sec | 2.6:1 |
Source: Implementing Backup and Recovery: The Readiness Guide for the Enterprise by David B. Little and David A.
Bookmark/Search this post with:
Trackback URL for this post:
http://www.itservicestrategy.com/trackback/21
- Login to post comments
- 504 reads