If your existing drives are FICON attached, probably not. If ESCON
attached, you really want to go FICON. A single 3590H drive, with
compressible data on tape, can easily outperform ESCON throughput. 3590
drives always read/write in streaming mode. For the drive to be
constantly stopping the tape, and backing up because the controller
buffer is full (read), or empty(write), causes throughput to suffer
tremendously. Not good for the media either.
You do not have to reinitialize your tapes, but remember, you cannot
update a tape created on 3590B using a 3590H. You can only read the
data on the tape, or use it as a scratch tape. If you use products that
automatically extend partially used tapes, like HSM, you should probably
make sure all tapes are marked full.
גדי בן אבי wrote:
Hi,
We received an offer to upgrade our 3590B's to 3590H's.
If we go along with this upgrade, would I have to make any changes in the IO configuration?
Would I have to reinitialize the tapes, or would that happen automagically?
We are running z/OS 1.7 and CA-1 v11.5.
TIA
Gadi
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