Well, isn't it actually the other way around? You should set your REUSEDelay to the amount of days you keep your database backups. In case of a failure you will probably always want to restore the most recent database backup, but if that one fails too for some reason, you will have to fall back on older database backups. Of course this means losing backup information and it's for your shop to decide what is acceptable. We keep our database backups for 3 days (twice a day) and thus the REUSEDelay is set to 3 days. Since we don't use physical tape I think 3 days (equals 6 backups) is long enough. Keeping database backups for a longer period of time means a higher REUSEDelay and thus requires more scratch volumes. Kind regards, Eric van Loon AF/KLM Storage Engineering
-----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Ehresman,David E. Sent: maandag 17 februari 2014 15:31 To: [email protected] Subject: Re: Database Backup best practice You should keep at least as many TSM DB backups as the largest REUSEDelay on your storagepools. David -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Tom Taylor Sent: Monday, February 17, 2014 9:27 AM To: [email protected] Subject: [ADSM-L] Database Backup best practice Good morning Running TSM 6.3.4 I have read the admin guide best practice section on backing up the database and I have also done some google searching but I cannot find a straight answer on this... How many backups of the database should I keep available? I always do a full backup, is there any reason to keep any of the older full backups if I have a recent good one? Thomas Taylor System Administrator Jos. A. Bank Clothiers Cell (443)-974-5768 ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ********************************************************
