Hello, I have a situation where a zfs file server holding lots of graphic files cannot be backed up daily with a full backup. My idea was initially to run a full backup on Sunday through the lto library on more dedicated tapes, then have an incremental backup run on daily tapes. Brainstorming on this, led me to the idea that I could actually stop thinking about incremental backups (that may always lead me to unsafe backups anyway for some unlucky reason) and substitute the idea with daily snapshots. Actually, the full disaster ricovery is on the Sunday full backups (that can be safely taken away on Monday), while the daily solution would be just a safe place for daily errors by users (people who delete files by mistake, for example). This can be done simply running a snapshot per day during the night. My idea is to have cron to rotate snapshots during working days, so that I always have Mon,Tue,Wen,Thu,Fri,Sat snapshots, and have the cron shell delete the oldest (actually, if I have to run a Mon snapshot, I will delete the old Mon snapshots, this should run the cycle). My questions are: - is this a good and common solution? - is there any zfs performance degradation caused by creating and deleting snapshots on a daily basis, maybe fragmenting the file system?
Thanx for any suggestion Gabriele. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
