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From - Tue Sep 5 16:06:20 2000
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From: "D. Thomas Podnar" <tom@microlite.com>
Subject: Re: Travan NS problems
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Date: Tue, 5 Sep 2000 18:10:41 GMT
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To: robbie@systemsencore.co.uk, scomsc@xenitec.on.ca
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: We are experiencing problems with backups on our SCO Openserver 5.0.5
: servers with Travan NS20 tapes (TR-5).
: After several months of use the tape fails to read part way through the
: data. Up to now we had assumed this to be a fault with the drive or dirty
: heads. We are now certaing that it is due to individual tape problems. Has
: anybody experienced these problems ??
:
: By the way, the drive is installed as a standard SCSI tape device although
: we are using a custom written backup routine which has always proven
: reliable over the past few years with other tape devices e.g. Tandberg .25".
: The error messages reported are not standard and so I havent reported them
: here.
:
: Robbie Niblock
Well, let's try asking the tape drive...
Install a demo copy of BackupEDGE from our web site.
(ftp://ftp.microlite.com/demos/010108/edgesco5)
For your purposes, we'll be skipping backup and disaster recovery and
going right to diagnostics.
The product will run in 60 day evaluation mode.
Type the following command immediately, then right after a failure.
/usr/lib/edge/bin/edge.tape -V /dev/xStp0
If the tape drive is any kind of recent, it will have TapeAlert diagnostics
built in and will report the hardware reason for its failure.
If it does not, every NS20 that I'm aware of has a firmware upgrade
which adds TapeAlert support. Try a firmware upgrade.
Below are a few of the messages that BackupEDGE might get from TapeAlert
compatible drives that may help diagnose tape read errors.
You'll see as you read through some of the messages that smart tape
drives can diagnose themselves, their media, and the bus and environment
they are working within.
Please let us all know if this helps.
Tom
---
D. Thomas Podnar - President tom@microlite.com Email
Microlite Corporation 724-375-6711 Voice
2315 Mill Street 724-375-6908 Fax
Aliquippa PA 15001-2228 888-257-3343 Toll Free Sales
+--------------------------------------------------------------------------+
| The Crash Recovery Company(sm) |
+--------------------------------------------------------------------------+
|Makers of Microlite BackupEDGE - Data Archiving Software For Unix/Linux. |
| and Microlite RecoverEDGE - The Smart Crash Recovery Software with |
| Network Support for Linux, UnixWare 7.1,|
| OpenServer 5.0.x and Unix 3.2v4.2. |
|http://www.microlite.com ftp://ftp.microlite.com |
+--------------------------------------------------------------------------+
---
Sampling of possible TapeAlert messages...
---
The tape drive is having problems reading data.
No data has been lost, but there has been a
reduction in the performance of the tape.
---
Your data is at risk:
1. Copy any data you require from this tape.
2. Do not use this tape again.
3. Restart the operation with a different tape.
---
The tape is damaged or the drive is faulty. Call
the tape drive supplier helpline.
---
The tape cartridge has reached the end of its
calculated useful life:
1. Copy any data you need to another tape
2. Discard the old tape.
---
The tape cartridge is nearing the end of its
calculated life.
It is recommended that you:
1. Use another tape cartridge for your next
backup.
2. Store this tape cartridge in a safe place in case
you need to restore data from it.
---
The tape drive needs cleaning:
1. If the operation has stopped, eject the tape
and clean the drive
2. If the operation has not stopped, wait for it to
finish and then clean the drive.
Check the tape drive users manual for device
specific cleaning instructions.
---
The tape drive is due for routine cleaning:
1. Wait for the current operation to finish.
2. Then use a cleaning cartridge.
Check the tape drive users manual for device
specific cleaning instructions.
---
A tape drive cooling fan has failed.
---
The tape drive power consumption is outside the
specified range
---
The tape drive has a hardware fault:
1. Turn the tape drive off and then on again.
2. Restart the operation.
3. If the problem persists, call the tape drive
supplier helpline.
Check the tape drive users manual for device
specific instructions on turning the device power
on and off.
---
The tape drive has a problem with the host
interface:
1. Check the cables and cable connections.
2. Restart the operation.
---
Environmental conditions inside the tape drive
are outside the specified humidity range
---
Environmental conditions inside the tape drive
are outside the specified temperature range.
---
The voltage supply to the tape drive is outside
the specified range.
---
A hardware failure of the tape drive is predicted.
Call the tape drive supplier helpline.
---
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