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Table 7. Suggested Block Sizes for Tape
Tape Type Media Block Size
Blocks Between Tape
Marks
Estimated Physical
Volume Size
Ampex DST-312 1 MB 1024 50, 150, 330 GB
Ampex DST-314 1 MB 1024 100, 300, 660 GB
IBM 3580 (LTO) 256 KB 1024 100 GB
IBM 3580 (LTO Gen 2) 256 KB 1024 200 GB
IBM 3580 (LTO Gen 3) 256 KB 2048 400 GB
IBM 3580 (LTO Gen 4) 256 KB 2048 800 GB
IBM 3590 256 KB 512 10, 20 GB
IBM 3590E 256 KB 512 20, 40 GB
IBM 3590H 256 KB 512 60, 120 GB
IBM 3592 J 256 KB 1024 60 GB (JJ Short),
300 GB (JA
Standard)
IBM 3592 E05 256 KB 2560 100 GB (E05 Short),
500 GB (E05
Standard),
660 GB (E05 XL)
IBM 3592 E06 256 KB 2560 100 GB (E06 Short),
500 GB (E06
Standard),
1000 GB (E06 XL)
Sony GY-8240 256 KB 1024 60, 200 GB
Sony SAIT-1 256 KB 1024 500 GB
StorageTek 9840A 256 KB 1024 20 GB
StorageTek 9840B 256 KB 1024 20 GB
StorageTek 9840C 256 KB 1024 40 GB
StorageTek 9840D 256 KB 1024 75 GB
StorageTek 9940A 256 KB 1024 60 GB
StorageTek 9940B 256 KB 1024 200 GB
HPSS Installation Guide July 2008
Release 6.2 (Revision 2.0) 108