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Conference cookie::archive_backup

Title:	Archive/Backup

Moderator:	COOKIE::MHUAIG

Created:	Wed Sep 08 1993
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	479
Total number of notes:	2283

399.0. "??(PAB) " PAB + MDMS + TL812 problem"??" by TPOMC1::MTLEE () Tue Mar 11 1997 19:29

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        ??(PAB)  " PAB + MDMS + TL812 problems  " ??
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  Hi, 
     we have a customer with rare problems about control TL812 in MDMS.
     He is working with OpenVMS/ALPHA V6.2 , PAB V2.1 & MDMS V2.8.

     we known MDMS volume lifecycle are free,allocated,tran & down.
   
     we known PAB :
        storage class have retention,expiration date & consolidation interval.
        save request have storage class default retention,
                          object retention period,
                          object expiration date.

     problem: how to use PAB to control MDMS volume lifecycle ?

     best regard 
     mtlee

T.R Title User Personal
Name Date Lines

399.1 ABS defines scratch date COOKIE::HELLWIG Wed Mar 12 1997 11:18 26

T.R	Title	User	Personal Name	Date	Lines
399.1	ABS defines scratch date	COOKIE::HELLWIG		`Wed Mar 12 1997 11:18`	26
	The Storage Class consolidation criteria (interval, size, savesets) will determine when to stop using a media set and start using a new volume set. For example, if your Storage Class consolidation is set to 7 days, all save requests that use that storage class will use the same media for 7 days. After the 7th day, that media set will be retired for writing. A new media set will be allocated for use on the 8th day. The Storage Class retention period will determine the scratch date for the volume. ABS updates the scratch date on the volume set based upon the retention period in the Storage Class. Once the volume has reached it's scratch date, MDMS moves it to the next state. There are 2 important TAPESTART values for this. They are FRESTA and TRANS_AGE. If you have FRESTA set to TRANS, then the volume goes to the TRANS state. It will remain in the trans state for TRANS_AGE number of days. If you have FRESTA set to FREE, the volume is moved to the free state. So in summary, ABS will set the scratch date based upon the retention period in the storage class. MDMS will then move the media to it's different states based upon the values you have defined in TAPESTART.COM. Kim

The Storage Class consolidation criteria (interval, size, savesets)
will determine when to stop using a media set and start using
a new volume set.  For example, if your Storage Class consolidation
is set to 7 days, all save requests that use that storage class will
use the same media for 7 days.  After the 7th day, that media set
will be retired for writing.  A new media set will be allocated for
use on the 8th day.

The Storage Class retention period will determine the scratch
date for the volume.  ABS updates the scratch date on the
volume set based upon the retention period in the Storage Class.

Once the volume has reached it's scratch date, MDMS moves it to the
next state.  There are 2 important TAPESTART values for this.  They
are FRESTA and TRANS_AGE.  If you have FRESTA set to TRANS, then
the volume goes to the TRANS state.  It will remain in the trans
state for TRANS_AGE number of days.  If you have FRESTA set to FREE,
the volume is moved to the free state.

So in summary, ABS will set the scratch date based upon the
retention period in the storage class.  MDMS will then move
the media to it's different states based upon the values
you have defined in TAPESTART.COM.

Kim