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Article #837Problems writing to 2 Exabytes
From: Bill Rathbun, LBL, x7995
Date: Fri, 06 Nov 1992 00:03
Date: Fri, 06 Nov 1992 00:03
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We have been having recurring failures while trying to write real-time data to two Exabyte 8mm tape drives. Writing to a single drive works fine (within known limitations) but if we write identical data to two drives more or less simultaneously,after a while one of the drives will stop writing, although the scsi activity light blinking at the rate of incoming data. The error log indicates an illegal scsi command (0), but we've changed drives, controllers, configuration and emulations with no apparent effect. We are using a Vaxstation 3200 series with Exabyte 8200's with various TD Systems Viking q-bus host/bus adapters; we've also tried TTI exabyte 8210's and 8510's with both Viking and TTI controllers. The Viking controller emulates a TK50, whereas the TTI controller emulates a TU81. Both failed similarly. Any suggestions?
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Path: arc1-ca.pugleaf.net!sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!sdd.hp.com!saimiri.primate.wisc.edu!ames!agate!dog.ee.lbl.gov!csa1.lbl.gov!rathbun From: rathbun@csa1.lbl.gov (Bill Rathbun, LBL, x7995) Newsgroups: comp.periphs Subject: Problems writing to 2 Exabytes Date: 5 Nov 1992 16:03 PST Organization: Lawrence Berkeley Laboratory - Berkeley, CA, USA Lines: 14 Distribution: world Message-ID: <5NOV199216030811@csa1.lbl.gov> NNTP-Posting-Host: 128.3.254.196 Keywords: exabyte, 8mm tape, vax3200/vms News-Software: VAX/VMS VNEWS 1.41