topic Re: MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3 in StoreEver Tape Storage

MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3

Maurice Hicks — Mon, 22 Aug 2005 09:49:35 GMT

Hello,

I am trying to setup a MSL 6030 on an IBM AIX 4.3.3 system via an IBM HBA 6228. I am able to see and write to the MSL from the IBM AIX system but am unable to stack backs. It appears the MSL is auto rewinding the tape between backups. I have tried using the UNIX native tar command to backup to /dev/rmt0.1 & /dev/rmt0.5 non-auto rewind devices with no success.

We are using a backup software called Storix which by default writes to the /dev/rmtX.1 tape device.

Any direction or advice is greatly appreciated.

Re: MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3

meloni — Mon, 22 Aug 2005 16:00:02 GMT

not sure if this can help, but there is a setting in the library that will prevent tapes to be ejected automatcaly after a backup, this parametre is " implicit" or "explicit".
"explicit" wait for a specific "unload" command, but do not know ih the rewind take place anyway

Re: MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3

Maurice Hicks — Tue, 23 Aug 2005 07:14:28 GMT

Hello,

I just tried changing the "implicit" parameter to "explicit" with no success. I changed the parameter and ran a couple quick tar commands, listed them from the tape and only the second listing appeared. It appears the tape rewound in between the tar commands.

Thank you for suggestion.

Re: MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3

meloni — Tue, 23 Aug 2005 10:06:26 GMT

you probably need to ask this to the unix support forum, I do not deal with unix system, but I know you can create special file for rewinding or not rewinding tapes. May be this is the trick

marino

Re: MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3

BR19682 — Fri, 02 Sep 2005 07:36:08 GMT

Hi there.
check the backup software, whether there is a parameter to append backups to the tape ( until it is full ) or use a different tape after each backup.
Rgds
Alexander M. Ermes

Re: MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3

Maurice Hicks — Fri, 02 Sep 2005 07:40:52 GMT

Hello,

I am using the native Unix command Tar to the no rewind device rmt1.1. I have not found any other command switches to specify a non auto rewind device.

Thank you for your suggestion.

Re: MSL 6030 Auto-rewinds between backups - Unable to stack backups - on AIX 4.3.3

BR19682 — Fri, 02 Sep 2005 07:48:57 GMT

Hi there.
The native tar usually does a rewind, because it does not set a end-of-job marker on the tape. Any additional backups can destroy the data on the tape.
Rgds
Alexander M. Ermes