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From: han@eemips.tamu.edu (Kyongho Han)
Newsgroups: comp.sys.mips
Subject: Exabyte tape compatibility
Message-ID: <15793@helios.TAMU.EDU>
Date: 4 May 91 18:49:05 GMT
Sender: usenet@helios.TAMU.EDU
Reply-To: han@eemips.tamu.edu (Kyongho Han)
Organization: Texas A&M University, College Station
Lines: 29

We have one RC3230 and one RC3240 and both machines have 8mm Exabyte
tape drives.
The Exabyte drive on RC3240 is about one year older than the drive 
on RC3230.
Our problem is 
	We made backup tapes from both drives and thie drive on RC3240
	can read both tapes from RC3240 and RC3230 drives.
	But the drive on RC3230 can read tape from RC3230 only
	and it can not read tape from RC3240.	 
	When we tried to read the RC3240 tape from RC3230 drive,
	we got an error message like this;

	SCSI 4L0: illegal block lenghth 129024, actual=192512
	Tape read error while trying to set up tape
	
We are using the same command for backup on both machines.
/etc/dump 0fubsd /dev/rmt/hc4 126 6000 54000 (filesystem)
We may need to read a tape of one machine from the other drive.
Currently, we can not read tape of RC3240 from Rc3230 drive.
We swapped the tape drive with a new one sent from Mips CSC
but the problem stays as the same.
Are there anybody who has the same problem or who can give me 
some idea ?


han@eemips.tamu.edu
han@ee.tamu.edu

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