similar to: Good linux software RAID primer advise

Dear Experts, one of the RAID threads today prompted me ask everybody. Which internal hardware RAID controllers will survive some future to come in your estimate. First of all my beloved 3ware finally seems to have passed away. After multiple acquisitions and becoming part of LSI and getting bought with LSI, it probably became non operational. Namely, the latest 3ware cards have ancient

On 08/05/16 09:02 PM, Valeri Galtsev wrote: > > On Sun, May 8, 2016 7:31 pm, Digimer wrote: >> On 08/05/16 08:12 PM, John R Pierce wrote: >>> On 5/6/2016 2:26 PM, Valeri Galtsev wrote: >>>> Which internal hardware RAID controllers will survive some future to >>>> come >>>> in your estimate. First of all my beloved 3ware finally seems to

On 08/05/16 08:12 PM, John R Pierce wrote: > On 5/6/2016 2:26 PM, Valeri Galtsev wrote: >> Which internal hardware RAID controllers will survive some future to come >> in your estimate. First of all my beloved 3ware finally seems to have >> passed away. After multiple acquisitions and becoming part of LSI and >> getting bought with LSI, it probably became non

Speaking from experience (I cannot go into detail on this point), and as Digimer pointed out, LSI seems to be the only choice for enterprise level, large scale deployments. If your concern is extremely long term deployments with verifiable data recovery options, software RAID is the only option, as you have strong guarantees that the implementation will never "die" as hardware RAID

Dear Experts, I was running ISC DHCP server for longer than I would care to remember. Now I decided to climb out of the cave and configure failover set (primary-secondary), and I seem to hit brick wall, which I need help with. I only need IP v4, no v6, which may simplify things. Could someone point to a description of working DHCP failover configuration? I do not want to make two independent

On Fri, October 30, 2015 9:31 pm, Mark LaPierre wrote: > On 10/30/15 17:30, Max Pyziur wrote: >> >> Greetings, >> >> I have three drives; they are all SATA Seagate Barracudas; two are >> 500GB; the third is a 2TB. >> >> I don't have a clear reason why they have failed (possibly due to a >> deep, off-brand, flakey mobo; but it's still

Got a new box I'm trying to set up. I configured the RAID from the firmware, but "fast initialize" was sitting there at 0% (it's about 43 or 45TB). The first time I tried this, I said background, and rebooted the system. And the stupid annoying alarm started up as the system came up. This time, having *finally* figured out how to set up hot spares from the WebBIOS, I suspended

Dear All, I know it is an oxymoron: good free ... service ;-) Still, can someone recommend good free email service? I definitely will not go with google, Microsoft, Apple. I don't have same strong feeling about yahoo as I have about above, but... Anyway, thanks in advance for all your advises. Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator

On Thu, November 2, 2017 11:18 am, hw wrote: > m.roth at 5-cent.us wrote: >> hw wrote: >>> Richard Zimmerman wrote: >>>> DO NOT buy the newer HPE DL20 gen9 or ML10 gen9 servers then >>>> (especially >>>> if using CentOS 6.x) >>> >>> What would you suggest as alternative, something from Dell? >> >> Yep, Dell's

On Thu, November 19, 2015 8:15 am, m.roth at 5-cent.us wrote: > Fred Smith wrote: >> On Wed, Nov 18, 2015 at 09:49:43PM -0700, Devin Reade wrote: >>> --On Wednesday, November 18, 2015 11:07:12 PM -0500 Fred Smith >>> <fredex at fcshome.stoneham.ma.us> wrote: >>> >>> >But it isn't at all obvious how one would do a new RAID1 setup in

Dear Experts, I would like to ask your advise on good reading about how to add WiFi device, and how to control its settings on CentOS. Sounds really dumb, but this is what I am NOT able to do on CentOS 7 what I was able to do in the past, beginning somewhere since RedHat 5 or 6, through Fedora and up to CentOS 6. In brief: my card is Intel 6235; CentOS 7 (fully updatted), latest kernel

On Fri, September 8, 2017 9:48 am, hw wrote: > m.roth at 5-cent.us wrote: >> hw wrote: >>> Mark Haney wrote: >> <snip> >>>> BTRFS isn't going to impact I/O any more significantly than, say, XFS. >>> >>> But mdadm does, the impact is severe. I know there are ppl saying >>> otherwise, but I??ve seen the impact myself, and I

On Sun, January 11, 2015 8:29 pm, Eddie G. O'Connor Jr. wrote: > On 01/11/2015 09:24 PM, Valeri Galtsev wrote: >> On Sun, January 11, 2015 7:29 pm, Keith Keller wrote: >>> On 2015-01-12, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: >>>> PS I guess I just mention it. I'm quite happy about CentOS (or RedHat >>>> if >>>> I

Valeri Galtsev wrote: > > On Fri, May 6, 2016 1:36 pm, m.roth at 5-cent.us wrote: >> Got a new box I'm trying to set up. I configured the RAID from the >> firmware, but "fast initialize" was sitting there at 0% (it's about 43 >> or 45TB). The first time I tried this, I said background, and >> rebooted the system. >> >> And the stupid

Dear All, Could someone give me some pointers. I never had it on CentOS 4,5,6. On freshly installed CentOS 7 ("development workstation" installation type with several extra things) when I log in as root in console I get this message: attempting to create directory /root/perl5 and indeed empty directory /root/perl5 is being created. (And my understanding is that that is done for every

On Sun, May 8, 2016 7:55 pm, John R Pierce wrote: > On 5/8/2016 5:31 PM, Digimer wrote: >> "Hardware RAID" can very well include a controller with dedicated parity >> processing, battery/flash backed write caching and other tangible >> benefits. > > Yes, battery/flash write-back cache provides some performance benefit in > write intensive workloads. but

> > > On 2019-12-02 13:15, Earl Terwilliger via CentOS wrote: >> Hi, >> >> I am trying to install Squirrelmail on Centos 8 but it seems that >> package >> is missing in the EPEL repo for Centos 8? Anyone know if this was on >> purpose or how to tell which packages won't be created? > > As far as I know, squirrelmail is noT actively maintained

Dear All, I guess, we all have to urgently apply workaround, following, say, this: https://gryzli.info/2016/10/21/protect-cve-2016-5195-dirtycow-centos-7rhel7cpanelcloudlinux/ At least those of us who still have important multi user machines running Linux. (Yes, me too, I do have a couple, thank goodness, the rest are already not ;-) Have a productive weekend, everybody. Valeri

Dear Experts, Could someone point me in the right direction: how can I disable hybernate/suspend in CentOS 7? I get workstations for graduate students with decent amount of RAM (32 GB), and for machines with large RAM I either do not have swap at all of have some small (4 GB) swap. As I remember from older manuals, one has to have at least twice amount of swap compared to physical RAM for

Dear All, Three groups of scientists need to write documents collaboratively. They are going to use MS PowerPoint, Word, also store PDF files. They want to be able to add external people from other groups they collaborate with and give them access to some areas or "projects". In other words, they want some collaborative work environment, mostly to work on documents. In the past