Appendix D. Product Notes for IBM RS/6000
Order Number: EK–SMITB–UG. E01
D–3
The files that are created are:
Tape Drive Special File Characteristics
Special File Name
Rewind-on-Close
Retention-on Open
Bytes-per-Inch
/dev/rmt*
Yes
No
Density Setting # 1
/dev/rmt*.1
No
No
Density Setting # 1
/dev/rmt*.2
Yes
Yes
Density Setting # 1
/dev/rmt*.3
No
Yes
Density Setting # 1
/dev/rmt*.4
Yes
No
Density Setting # 2
/dev/rmt*.5
No
No
Density Setting # 2
/dev/rmt*.6
Yes
Yes
Density Setting # 2
/dev/rmt*.7
No
Yes
Density Setting # 2
NOTES
1. The suggested values of
density setting #1 and #2 are for
compressed and uncompressed format respectively. The only use
of uncompressed format is to determine the relative effectiveness
of the compressed mode.
2. The
density value can be useful in reading tapes on earlier TK50,
TK70, TK85, and TK86 cartridges.
3. IBM-supplied tape drives default to a block size of 1024 while tape
drives from other manufacturers default to a block size of 512.
StorageWorks recommends changing the block size of the SWXTL-
AA to be compatible with the IBM-supplied drives. However, for
some uses such as making bootable tapes or transferring tapes
between host systems, a value of 512 or 0 (variable size) may be
needed.
