W dniu 22.04.2021 o 10:31, (K.K.Paradox)T.Kobayashi pisze:
Hello,
I have questions for 3592's hardware compression.
There is a tape where a DFDSS dump was created on a 3592 drive
(TS1130) with the COMPACT feature enabled.
Q1. Can I read this tape on another 3592 drive (such as TS1130 or
TS1140)?
Are the 3592 hardware compressions compatible?
Yes. Any drive capable to read the tape will also support compression
and understand compressed data.
BTW: drive compression feature was introduced in 80's and since then all
IBM tape drives do support it. IMHO there is no reason to not use
compression.
Q2. If I copy with DITTO's tape to tape or COPYDUMP from 3592 drive to
another tape drive (hardware compression does not supported), will the
hardware compression be uncompressed?
Tape drive compression has no impact.
I would suggest to use COPYDUMP, but drive compression is irrelevant.
--
Radoslaw Skorupka
(looking for new job)
Lodz, Poland
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