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Operating Systems SCO Dell PowerEdge 2600 tape backup Post 302374495 by ezlarry on Tuesday 24th of November 2009 04:36:33 PM
Old 11-24-2009
Dell PowerEdge 2600 tape backup

I was asked to get a Dell PowerEdge 2600 server, out of warranty, running SCO 3.2v5.06 to perform a full backup. I spent hours researching and preparing a strategy only to fail on-site.

The only device names in /dev for a tape drive were

/dev/xStp0
/dev/xcdt0
/dev/xct0

There was no /dev/rStp0 as expected for a scsi drive, so I assumed the drive wasn't scsi. I tried all the above device names in all the commands below.

I tried many of the things would find searching online, but none worked. For example, I went into scoadmin to view the tape drive settings to verify kernel knew about it. It came back with only this
ID 0 Dat



I tried mounting the tape device but got errors about cannot access device

I tried writing a single file to tape only to get errors about cannot access device
# cd /tmp
# ls > junk
# find ./junk -print | cpio -ocaB > /dev/xStp0

I tried some tape commands and got same errors about cannot access
# tape reten /dev/xStp0 (or rewind)
# tape status same with # dtype /dev/xStp0
I tried hwconfig -h but didn't see anything that indicated the drive was recognized.
# sdiconfig -l was an unrecognized command
Since the system was in production during normal hours, I could not try mkdev tape, but even if I could, I'm not sure I'd get anywhere.

Since this is a Dell system, I'm wondering if the tape drive was ever configured correctly coming from them. The bundled internal tape drive appears to be a Dell PowerVault 100T Dat72. I determined that by looking at the service tag system configuration (shown here)

1
U1868,
Tape Backup Unit,20GB,Half Height,Internal,DDS4,Seagate V7

and by looking up the PowerEdge 2600's description at
http://www.dell.com/downloads/global/products/pedge/en/2600_specs.pdf

I'm in need of your advice regarding the tape drive.
I'd also like to know the easiest way to get a full backup off of this thing as soon as possible independent of the internal tape drive. For example, it must be running NFS since a user showed me she could access files from Windows. Is there a product that can backup from Windows? Is there a way to backup to USB? The cd drive is not writable. This thing has never been backed up.

I'd try microlite if I was sure that running mkdev tape would get me anywhere, but I'd like to know why the "installed" tape drive isn't working if possible.

Thanks.
 

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READ_TAPE(8)						       AFS Command Reference						      READ_TAPE(8)

NAME
read_tape - Reads volume dumps from a backup tape to a file SYNOPSIS
read_tape -tape <tape device> -restore <# of volumes to restore> -skip <# of volumes to skip> -file <filename> [-scan] [-noask] [-label] [-vheaders] [-verbose] [-help] DESCRIPTION
read_tape reads an OpenAFS backup tape and prompts for each dump file to save. This command does not require any OpenAFS infrastructure. This command does not need an OpenAFS client or server to be available, which is not the case with the backup(8) command. The dump files will be named for the Read/Write name of the volume restored. After saving each dump file, vos restore or restorevol can be used to restore the volume into AFS and non-AFS space respectively. read_tape reads the tape while skipping the specified number of volumes. After that, it restores the specified number of volumes. read_tape doesn't rewind the tape so that it may be used multiple times in succession. OPTIONS
-tape <tape device> Specifies the tape device from which to restore. -restore <# of volumes to restore> Specifies the number of volumes to restore from tape. -skip <# of volumes to skip> Specifies the number of volumes to skip before starting the restore. -file <filename> Specifies an alternate name for the restored volume dump file rather than the default of the volume name. -scan Scans the tape. -noask Doesn't prompt for each volume. -label Displays the full dump label. -vheaders Displays the full volume headers. -verbose Produces on the standard output stream a detailed trace of the command's execution. If this argument is omitted, only warnings and error messages appear. -help Prints the online help for this command. All other valid options are ignored. EXAMPLES
The following command will read the third through fifth volumes from the tape device /dev/tape without prompting: % read_tape -tape /dev/tape -skip 2 -restore 3 -noask PRIVILEGE REQUIRED
The issuer must have access to read and write to the specified tape device. SEE ALSO
backup(8), restorevol(1), vos_restore(1) COPYRIGHT
Copyright 2007 Jason Edgecombe <jason@rampaginggeek.com> This documentation is covered by the BSD License as written in the doc/LICENSE file. This man page was written by Jason Edgecombe for OpenAFS. OpenAFS 2012-03-26 READ_TAPE(8)
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