7207 TAPE DRIVE COMPATIBILITY (525MB AND 1.2 GB
ITEM: RTA000032845
QUESTION:
With the withdrawal of the 7207-001 and 011 external tape drives
from marketing in the near future, what are the compatibility (R/W)
issues we have to consider when a customer has an investment in
model 011's (525mb) and will need to go to the model 012's (1.2GB)?
I understand that, for example, a model 1 cannot read/write tapes
from a model 11. What about model 11 to model 12 and vice versa?
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A: You are correct, announcement letter 193-154 gives information
about the withdrawal from marketing of the 7207-001 and 7207-011.
However, your customer will still be able to use these tape drives
along with the newer 7207-012 1.2GB 1/4-inch tape. The 7207-012
will be able to read and write tapes with these formats.
FORMAT DENSITY SETTING
=========== =================
QIC-120 15
QIC-150 16
QIC-525 17
QIC-1000 21
With the capability of the 7207-012, you will still be able to
read tapes from the 001 and 011 tape drives, and with use of the
different density settings, will be able to write tapes that the
001 and 011 drives will be able to read.
Basically, the only problem that this will cause to your customer,
is that they will have to be careful when making backups to use
the correct tape density format. The different densities can be
set up in 'smit chgtpe'. Then after the correct density settings
are configured, the rmt special file can be used to choose which
density to use. For example, rmt0, rmt0.1, rmt0.2, rmt0.3 means
that density setting #1 will be used and rmt0.4, rmt0.5, rmt0.6,
rmt0.7 will use density setting #2.
An example that might be useful in this situation. If your
customer will be making a great deal of 525mb tapes to be sent out
to other machines and many 1.2GB tapes for use on this one machine,
leave the density setting #1 to 21 and make sure that density setting
#2 is 17. Then when making and reading tapes for/from the other
machines use rmt#.4 through rmt#.7, and when making tapes for the
1.2GB machines use rmt# - rmt#.3.
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This item was created from library item Q634947 CHTGG
Additional search words:
CHTGG COMPATIBILIT COMPATIBLE DEN DENSITY DRIVE DRIVER GB HARDWARE
IX OZNEW RISCOHW RISCSYSTEM SEP93 TAPE 1.2 525MB 7207
WWQA: ITEM: RTA000032845 ITEM: RTA000032845
Dated: 04/1996 Category: RISCOHW
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