Tapetype definitions: Difference between revisions
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Running [[amtapetype]] takes some time (expect 5-8 hours). | Running [[amtapetype]] takes some time (expect 5-8 hours). | ||
The program will fill a scratch tape twice with random data. | The program will fill a scratch tape twice with random data. | ||
When running | When running "amtapetype" yourself be sure to add a realistic estimate option: | ||
"amtapetype -e 200g ...", otherwise, the program could take days to complete. | |||
Running amtapetype on your installation instead of just using the values found here, | Running amtapetype on your installation instead of just using the values found here, | ||
allows you to verify the capacity (is hardware compression | allows you to verify the capacity (is hardware compression "on" by mistake?) | ||
and speed (is there a problem with my SCSI chain?). | and speed (is there a problem with my SCSI chain?). | ||
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* Attached to Adaptec 2940 Fast-SCSI (10MB/s) | * Attached to Adaptec 2940 Fast-SCSI (10MB/s) | ||
define tapetype DLT8000 { | define tapetype DLT8000 { | ||
comment | comment "Quantum DLT8000 created by tapetype" | ||
length 38130 mbytes | length 38130 mbytes | ||
filemark 29 kbytes | filemark 29 kbytes | ||
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* Attached to Adaptec 2940 Fast-SCSI (10MB/s) | * Attached to Adaptec 2940 Fast-SCSI (10MB/s) | ||
define tapetype SDLT600 { | define tapetype SDLT600 { | ||
comment | comment "Quantum SDLT600 with 10MB/s" | ||
length 306789 mbytes | length 306789 mbytes | ||
filemark 0 kbytes | filemark 0 kbytes | ||
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* Attached to Adaptec 19160 SCSI-160 LVD (160MB/s) | * Attached to Adaptec 19160 SCSI-160 LVD (160MB/s) | ||
define tapetype SDLT600 { | define tapetype SDLT600 { | ||
comment | comment "Quantum SDLT600 with SCSI-3" | ||
length 304896 mbytes | length 304896 mbytes | ||
filemark 0 kbytes | filemark 0 kbytes | ||
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* Attached to Adaptec 29160 Ultra160 SCSI adapter, using DLT-VS1 tape: created using 'tapetype' by [email protected] | * Attached to Adaptec 29160 Ultra160 SCSI adapter, using DLT-VS1 tape: created using 'tapetype' by [email protected] | ||
define tapetype Quantum-DLT-V4 { | define tapetype Quantum-DLT-V4 { | ||
comment | comment "Quantum-DLT-V4 on Adaptec 29160" | ||
length 157284 mbytes | length 157284 mbytes | ||
filemark 0 kbytes | filemark 0 kbytes | ||
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* Attached to Adaptec 2940 (10 MB/s) | * Attached to Adaptec 2940 (10 MB/s) | ||
define tapetype AIT1-35 { | define tapetype AIT1-35 { | ||
comment | comment "AIT1 cartridge 35/70 Gbyte compression off" | ||
length 33400 mbytes # rounded down | length 33400 mbytes # rounded down | ||
filemark 500 kbytes | filemark 500 kbytes | ||
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Note: using hardware compression together with software compression does not lower the tape capacity, as many other tape drives do. | Note: using hardware compression together with software compression does not lower the tape capacity, as many other tape drives do. | ||
define tapetype LTO { | define tapetype LTO { | ||
comment | comment "just produced by tapetype prog (hardware compression off)" | ||
length 101376 mbytes | length 101376 mbytes | ||
filemark 0 kbytes | filemark 0 kbytes | ||
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Note: using hardware compression together with software compression does not lower the tape capacity, as many other tape drives do. | Note: using hardware compression together with software compression does not lower the tape capacity, as many other tape drives do. | ||
define tapetype LTO2-200 { | define tapetype LTO2-200 { | ||
comment | comment "LTO Ultrium2 200/400" | ||
length 193024 mbytes | length 193024 mbytes | ||
filemark 0 kbytes | filemark 0 kbytes | ||
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* Attached to Adaptec 2940 | * Attached to Adaptec 2940 | ||
define tapetype DDS90 { | define tapetype DDS90 { | ||
comment | comment "DDS tapes drives - 90 meter tapes" | ||
length 1900000 kbytes # rounded down | length 1900000 kbytes # rounded down | ||
filemark 111 kbytes | filemark 111 kbytes | ||
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* Attached to Adaptec 2940 | * Attached to Adaptec 2940 | ||
define tapetype DDS120 { | define tapetype DDS120 { | ||
comment | comment "DDS tape drives - 120 meter tapes" | ||
length 3850000 # rounded down | length 3850000 # rounded down | ||
filemark 111 kbytes | filemark 111 kbytes | ||
speed 380 kps | speed 380 kps | ||
} | } | ||
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Revision as of 03:12, 13 December 2005
Running amtapetype takes some time (expect 5-8 hours). The program will fill a scratch tape twice with random data. When running "amtapetype" yourself be sure to add a realistic estimate option: "amtapetype -e 200g ...", otherwise, the program could take days to complete.
Running amtapetype on your installation instead of just using the values found here, allows you to verify the capacity (is hardware compression "on" by mistake?) and speed (is there a problem with my SCSI chain?).
Not all tapes have exactly the same length, therefor some length values have been rounded down, as noted in the entries. This allows Amanda to do better planning, because you waste a lot of capacity when the last few bytes of a multi-gigabyte dump do not fit on the tape.
Quantum DLT8000
- Attached to Adaptec 2940 Fast-SCSI (10MB/s)
define tapetype DLT8000 { comment "Quantum DLT8000 created by tapetype" length 38130 mbytes filemark 29 kbytes speed 5627 kps }
Quantum SDLT600
- Attached to Adaptec 2940 Fast-SCSI (10MB/s)
define tapetype SDLT600 { comment "Quantum SDLT600 with 10MB/s" length 306789 mbytes filemark 0 kbytes speed 8247 kps }
- Attached to Adaptec 19160 SCSI-160 LVD (160MB/s)
define tapetype SDLT600 { comment "Quantum SDLT600 with SCSI-3" length 304896 mbytes filemark 0 kbytes speed 31703 kps }
Quantum DLT-V4
- Attached to Adaptec 29160 Ultra160 SCSI adapter, using DLT-VS1 tape: created using 'tapetype' by [email protected]
define tapetype Quantum-DLT-V4 { comment "Quantum-DLT-V4 on Adaptec 29160" length 157284 mbytes filemark 0 kbytes speed 9936 kps }
Sony AIT-1 with 35/70 Gbyte tapes
- Attached to Adaptec 2940 (10 MB/s)
define tapetype AIT1-35 { comment "AIT1 cartridge 35/70 Gbyte compression off" length 33400 mbytes # rounded down filemark 500 kbytes speed 2890 kps }
LTO Ultrium 1 with 100/200 Gbyte tapes
- Attached to Adaptec 39160
Note: using hardware compression together with software compression does not lower the tape capacity, as many other tape drives do.
define tapetype LTO { comment "just produced by tapetype prog (hardware compression off)" length 101376 mbytes filemark 0 kbytes speed 13872 kps }
HP448 (LTO Ultrium2) with 200/400 Gbyte tapes
- Attached to Adaptec 29160 (160 MB/s)
Note: using hardware compression together with software compression does not lower the tape capacity, as many other tape drives do.
define tapetype LTO2-200 { comment "LTO Ultrium2 200/400" length 193024 mbytes filemark 0 kbytes speed 20570 kps }
DDS-2 90 meter tapes
- Attached to Adaptec 2940
define tapetype DDS90 { comment "DDS tapes drives - 90 meter tapes" length 1900000 kbytes # rounded down filemark 111 kbytes speed 380 kps }
DDS-2 120 meter tapes
- Attached to Adaptec 2940
define tapetype DDS120 { comment "DDS tape drives - 120 meter tapes" length 3850000 # rounded down filemark 111 kbytes speed 380 kps
}
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