We just migrated our ML2 tapes to 9840c. We TAPECOPY this tapes when they
get marked full. Does anyone have any experience with using HSM to TAPECOPY
these tapes? It is taking around 2-3 hrs. to copy 1 tape. Is anyone else
experiencing this? Thanks.
No experience, but lets do the math.
A 9840C holds 40GB uncompressed or about 120GB compressed (maybe more
with a good compression ratio).
The tape data rate is listed as 70MB/sec compressed.
So the best possible copy time is 120GB / 70MB/sec = about 1700 seconds
or about 30 minutes.
This assumes that the copy code is very efficient and can keep the tape
going at speed. I have no idea how efficient HSM TAPECOPY is but I can
see that it might take 2-3 hours for a full 9840C
--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data Processing 973-890-7300
personal: [EMAIL PROTECTED]
sales info: [EMAIL PROTECTED]
tech support: [EMAIL PROTECTED]
web: www.innovationdp.fdr.com
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