On Sat, 23 Feb 2013 09:45:15 -0800, Ed Jaffe <[email protected]> wrote:
>On 2/23/2013 9:33 AM, Paul Gilmartin wrote: >> >> Most of my department's large UNIX filesystems are NFS mounted >> from ZFS (not zFS) on Solaris servers. Our daily backups are >> ZFS snapshots, almost negligible latency, followed by background >> dumps to tape. > >Right. FLASHCOPY of a large volume on our DS8100 can be done in almost >an instant. But, copying the volume's data to tape takes hours -- as >mentioned previously. > >My question is about whether a DFS/SMB ZFS should be backed up at all >given its size and the existence of a daily TSM backup of its contents. > I'm not a TSM guy, but I would say no. I'm assuming TSM would (re)create the directory structure if you allocated / formatted a new empty zFS. Assuming it does, why not test the process and see how it works and get a timing so you have an idea of what the recovery time would be if you had to do it. Can you allocate an empty zFS mounted at a different mount point an tell TSM to restore it at a different starting node, something like /test_restore/.... etc? Or is the tape shared with another LPAR where you can test it? Or unmount the real one during an outage window and test the process. Regards, Mark -- Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS mailto:[email protected] Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html Systems Programming expert at http://expertanswercenter.techtarget.com/ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
