EXB-8200 only gets 1gb on a 112m tape.

[Terry West]

I seem to recall (it's been a long time since I used an EXB8200),
that the drive can waste quite of a bit of usable tape with
'stop' gaps that result when not writing data fast enough to keep
the drive streaming (this drive is a noisy unit, I remember I could hear
it stop/restart each time).  Try a test, buffering up your writes in
chuncks of say 10M, before writing to see if your capacity improves.

    Terry West
    <terry at rand.org>

"J. Hart" <jhart at hip.atr.co.jp> writes:

> 
> I have been trying for quite some time without success to figure
> out why my EXB-8200
> will only get 1Gb on a 112m tape.  According to the tape drive
> documentation, it should be
> able to hold up to 2.5 Gb on such a tape.
> 
> Except for this problem, the drive works perfectly.  Since the
> EXB-8200 is only a single
> density drive, the mt setdensity command does not appear to be supported
> for anything 
> other than a non-zero value (the driver default).
> 
> Here is my system configuration :
> 
> EXB-8200 SCSI1 tape drive
> servo code level C034  (June 26,1991 - latest version)
> firmware level 263H (Oct 15, 1991)
> minimun firmware level recommended by Exabyte for the EXB-8200
> for
> Linux is 2618 (March 19, 1991)
> OS
> RedHat 6.1
> kernal 2.2.12-20
> Adaptec AIC7xxx driver version: 5.1.27/3.2.4
> 
> Any ideas ?
> 
> Many Thanks....:-)
> 
> J. Hart
> jhart at hip.atr.co.jp
> 
> 
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