Re: [lopsa-tech] Best Unix Backup Rotation strategies?
On 2009 Feb 5, at 13:40, Elizabeth Schwartz wrote: Part of what set this off, BTW, is that I lost one of my big RAID's, and did a 600GB restore. That took about a day and a half. Then, the next five days in a row we got socked with 600GB of data backup charges, as that 600GB got backed onto level 5,4,3,2,1 tapes in that order... The more I think about that, the more I suspect the backup scheme is designed to maximize revenue rather than pursue any theory about data retention. If so, you may not be able to get changes made at all. (Although I suppose it could be a "we do it this way by default, if they catch on, let them spec their preferred sequence" maximizing income from the naïve.) -- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allb...@kf8nh.com system administrator [openafs,heimdal,too many hats] allb...@ece.cmu.edu electrical and computer engineering, carnegie mellon universityKF8NH PGP.sig Description: This is a digitally signed message part ___ Tech mailing list Tech@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
Re: [lopsa-tech] Enterprise Linux Update/Upgrade advice
Stephen L Johnson wrote: > > I'm looking for advice on if upgrading servers to newer RHEL versions > sooner is a good idea or not. That is going from RHEL 5.0 to 5.1 or RHEL > 5.0 to 5.3. Or if I should leave well enough alone. Note that package updates for RHEL, whether security or bugfixes, are handled differently than how IBM maintains AIX Technology Levels. IBM TL's are multi-forked trees of fileset releases, so a security or bug fix can result in updated filesets for several TL's. Red Hat updates are linear within a major releases (RHEL4, RHEL5), so if you're running RHEL 5.2, any patches are just steps along the way to RHEL 5.3. A notable exception is kernel RPMs, which can get multiple releases at different update levels (sometimes, anyway). -- Hello World.David Bronder - Systems Admin Segmentation Fault ITS-SPA, Univ. of Iowa Core dumped, disk trashed, quota filled, soda warm. david-bron...@uiowa.edu ___ Tech mailing list Tech@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
Re: [lopsa-tech] [SAGE] Enterprise Linux Update/Upgrade advice
Stephen L Johnson wrote: > We have a policy in place for keeping out AIX TL versions up to date. > Typically we have standardize at a given RHEL version for the lifetime > of the hardware. And then possibly moving up to new/latest RHEL version > when replacement time comes around for lots of servers. > > I'm looking for advice on if upgrading servers to newer RHEL versions > sooner is a good idea or not. That is going from RHEL 5.0 to 5.1 or RHEL > 5.0 to 5.3. Or if I should leave well enough alone. 4.3 should be RHEL 4, Update 3, and 5.1 should be RHEL 5, Update 1. You, unless you have special requirements (like EMC only certifying something on RHEL 4.6, or you have custom stuff that needs kernel x.y.z, glibc a.b.c, and Xorg c.q.z) should be able to upgrade from RHEL 4 to RHEL 4.x with minimal issues, and also from RHEL 5 to 5.x. Just like with every vendor, especially the more you customize, you occasionally get a really fun patch that has unexpected results ... -- -- John E. Jasen (jja...@realityfailure.org) -- No one will sorrow for me when I die, because those who would -- are dead already. -- Lan Mandragoran, The Wheel of Time, New Spring ___ Tech mailing list Tech@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
Re: [lopsa-tech] Enterprise Linux Update/Upgrade advice
I would first verify the apps are good on the current version and then just go to the latest version supported by the app. You may run into some odd issues here and there depending on how much you have tweaked the original install. Those issues can usually be solved by comparing the old conf file with the new one and making the appropriate changes. On Fri, Feb 6, 2009 at 11:37 AM, Stephen L Johnson wrote: > I'm in a mixed IBM AIX and Intel Linux shop (as well as Windows and > Mainframe). I'm deal mostly with the Linux systems. We're using > Scientific Linux which is a whitebox Redhat Enterprise distro and a few > true-red Redhat Enterprise servers as well. We're running mixed versions > of RHEL. RHEL 4.3 (due to older hardware incompatibility) and RHEL 5.0. > > We have a policy in place for keeping out AIX TL versions up to date. > Typically we have standardize at a given RHEL version for the lifetime > of the hardware. And then possibly moving up to new/latest RHEL version > when replacement time comes around for lots of servers. > > I'm looking for advice on if upgrading servers to newer RHEL versions > sooner is a good idea or not. That is going from RHEL 5.0 to 5.1 or RHEL > 5.0 to 5.3. Or if I should leave well enough alone. > > -- > Stephen L Johnson > > ___ > Tech mailing list > Tech@lopsa.org > http://lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ > ___ Tech mailing list Tech@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
[lopsa-tech] Enterprise Linux Update/Upgrade advice
I'm in a mixed IBM AIX and Intel Linux shop (as well as Windows and Mainframe). I'm deal mostly with the Linux systems. We're using Scientific Linux which is a whitebox Redhat Enterprise distro and a few true-red Redhat Enterprise servers as well. We're running mixed versions of RHEL. RHEL 4.3 (due to older hardware incompatibility) and RHEL 5.0. We have a policy in place for keeping out AIX TL versions up to date. Typically we have standardize at a given RHEL version for the lifetime of the hardware. And then possibly moving up to new/latest RHEL version when replacement time comes around for lots of servers. I'm looking for advice on if upgrading servers to newer RHEL versions sooner is a good idea or not. That is going from RHEL 5.0 to 5.1 or RHEL 5.0 to 5.3. Or if I should leave well enough alone. -- Stephen L Johnson ___ Tech mailing list Tech@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
