Linux on 390 Port <[email protected]> wrote on 05/04/2005 12:22:47 PM:
> On May 4, 2005, at 11:27 AM, James Melin wrote: > > > ACtual problems are still well into the future here - I'm still > > theoretical. > > > > I have a pair of 3490 tape drives that I could have in my > > configuration.... > > I would love to do more granular backups than DFDSS can provide.... > > I like > > the idea of backing up linux to datasets that are 'active0' meaning > > migrate > > immediately via NFS. I'm also open to directly accessing tape via > > management/backup process running natively on Linux, which it seems > > that > > Bacula could provide. Anything is likely to be an improvement over > > backing > > up boulders when I could be backing up pebbles instead. > > > The first thing works immediately, by doing file-based backup into an > NFS-mounted directory which is really under the control of DFSHSM. > > The second thing also works, by replacing mtx-changer with our tape- > mounting interface, and letting your VM system handle the actual tape > manipulation while allowing bacula to think that it is talking to a > SCSI autochanger. > > Adam Ultimately I am thinking weekly full volume backups via CDL (so I get such things as the cyl-0, the IPL records, etc) and daily incrementals via either bacula or the NFS option. What is the best way to copy only changed files? Right now I don't have VM ownership of those two tape devices, and I'm not sure that I can sell that to anyone. Don't really have a direct means of having VM tell z/OS in another LPAR that it is time to give it the tape drives for a while. The other question is this... if I go the NFS option, which is the most likely, will rsync work for me, or will it be a problem. Ultimately I'd want to do NFS backup target datasets as a GDG so I could go back to previous versions if I had to. We are not using NFS on z/OS as there has been no call for it locally. Can you NFS export the +0 GDG? I don't know if thats practical or not. Also, there is the issue that if I use NFS, and immediately migrate the dataset by management class, when it comes time for backup, does it cause the previously migrated version of the dataset to be recalled, then backup proceeds and then re-migration happens? (presuming non-GDG) ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
