Table of Contents
nice things to know
LTO Speedmatching
LTO drive speed matching native data rates (MB/s / GB/h)
| Generation 9 *) | Generation 8 | Generation 7 | Generation 6 | Generation 5 |
|---|---|---|---|---|
| 408 / 1468 | 360 / 1296 | 306.00 / 1101.60 | 160.00 / 576.00 | 140.00 / 504.00 |
| 385 / 1386 | 341 / 1228 | 287.52 / 1035.07 | 150.77 / 542.77 | 130.00 / 468.00 |
| 366 / 1318 | 318 / 1145 | 268.56 / 966.82 | 141.54 / 509.54 | 120.00 / 432.00 |
| 347 / 1249 | 306 / 1103 | 250.66 / 902.38 | 132.31 / 476.32 | 112.70 / 405.72 |
| 325 / 1170 | 273 / 983 | 231.86 / 834.70 | 123.08 / 443.09 | 105.50 / 379.80 |
| 305 / 1098 | 249 / 896 | 213.06 / 767.02 | 113.85 / 409.86 | 98.20 / 353.52 |
| 284 / 1022 | 226 / 814 | 194.26 / 699.34 | 104.62 / 376.63 | 90.90 / 327.24 |
| 263 / 947 | 203 / 731 | 175.46 / 631.66 | 95.38 / 343.37 | 83.60 / 300.96 |
| 244 / 878 | 180 / 648 | 157.67 / 567.61 | 86.15 / 310.14 | 76.40 / 275.04 |
| 223 / 803 | 157 / 567 | 138.52 / 498.67 | 76.92 / 276.91 | 69.10 / 248.76 |
| 203 / 731 | 135 / 486 | 120.11 / 432.40 | 67.69 / 243.68 | 61.80 / 222.48 |
| 177 / 637 | 112 / 403 | 101.46 / 365.26 | 58.46 / 210.46 | 53.5 / 192.60 |
| 49.23 / 177.23 | 46.30 / 166.68 | |||
| 40.00 / 144.00 | 40.00 / 144.00 |
Sources:
LTO-7
LTO-8
LTO9
IBM TS4500 R7 Tape Library Guide
IBM Tape Library Guide for
Open Systems
*) Speedsteps below 305 mb/s for full hight drives only
"real" LTO capacity measures
The values given are derived from a given number of tapes marked as full inside TSM
| Generation | LTO 9 | LTO 8 | LTO 7 | LTO 6 | LTO 5 |
|---|---|---|---|---|---|
| Minimum | — | 10.91 | 2.44 | 1.17 | 0.97 |
| Maximum | — | 38.55 | 47.05 | 10.73 | 5.18 |
| Average | — | 14.73 | 7.19 | 2.93 | 1.71 |
| Median | — | 13.85 | 6.43 | 2.83 | 1.60 |
| native | 18.00 | 12.00 | 6.00 | 2.50 | 1.50 |
| native compressed | 45.00 | 30.00 | 15.00 | 6.25 | 3.00 |
| Number of Tapes | — | 263 | 1404 | 4051 | 659 |
Enterprise Tape (Jaguar) Speedmatching
Jaguar drive speed matching data rates (MB/s) depend on the media and the generation style used (see [1] – [4])
| media / Generation | Jaguar 6 (12 speed steps) | Jaguar 5 (12 speed steps) | Jaguar 4 (13 speed steps) | Capacity (native) |
|---|---|---|---|---|
| JE media @ Generation 6 | up to 400MBps (1600 MBps) | – | – | 20 TB |
| JD media @ Generation 6 | up to 400MBps (800 MBps) | – | – | 15 TB |
| JD media @ Generation 5.5 | – | up to 360MBps | – | 15 TB |
| JD media @ Generation 5 | – | 112 – 365 MBps | – | 10 TB |
| JC media @ Generation 5 | – | 99 – 303 MBps | – | 7 TB |
| JC media @ Generation 4 | – | 90 – 252 MBps | 76 – 251 MBps | 4 TB |
| JB media @ Generation 4 | – | – | 74 – 203 MBps | 1.6 TB |
| JB media @ Generation 3 | – | – | 41 – 163 MBps | 1 TB |