Re: [CentOS] Internal RAID controllers question

2016-05-09 Thread Warren Young
On May 9, 2016, at 12:46 PM, Valeri Galtsev wrote: > > On Mon, May 9, 2016 1:14 pm, Gordon Messmer wrote: >> On 05/09/2016 11:01 AM, Valeri Galtsev wrote: >>> Thanks Gordon! Yes, I know, ZFS, of course. I hear it as you definitely >>> will use zfs for "bricks" of

Re: [CentOS] Internal RAID controllers question

2016-05-09 Thread Gordon Messmer
On 05/09/2016 11:46 AM, Valeri Galtsev wrote: Yes, ZFS, and thanks a lot! For distributed file system "brick" boxes ZFS (btrfs,...) may be a must, but only if distributed filesystem doesn't have its own mechanism ensuring file integrity, right? Ignore distributed filesystems for a moment. Is

Re: [CentOS] Internal RAID controllers question

2016-05-09 Thread Valeri Galtsev
On Mon, May 9, 2016 1:14 pm, Gordon Messmer wrote: > On 05/09/2016 11:01 AM, Valeri Galtsev wrote: >> Thanks Gordon! Yes, I know, ZFS, of course. I hear it as you definitely >> will use zfs for "bricks" of distributed file system, right? > > > You could, I suppose, but I don't think its use case

Re: [CentOS] Internal RAID controllers question

2016-05-09 Thread Gordon Messmer
On 05/09/2016 11:01 AM, Valeri Galtsev wrote: Thanks Gordon! Yes, I know, ZFS, of course. I hear it as you definitely will use zfs for "bricks" of distributed file system, right? You could, I suppose, but I don't think its use case is limited to that. There aren't many spaces where I think

Re: [CentOS] Internal RAID controllers question

2016-05-09 Thread Gordon Messmer
On 05/08/2016 06:51 PM, Valeri Galtsev wrote: In the past LSI would be my definite second choice, and 3ware was winning me only by their transparent web interface. 3ware had a much more pleasant web UI and CLI, but their hardware was terribly unreliable and their performance was pretty

Re: [CentOS] Internal RAID controllers question

2016-05-09 Thread Valeri Galtsev
On Mon, May 9, 2016 11:12 am, Gordon Messmer wrote: > On 05/08/2016 06:20 PM, John R Pierce wrote: >> there are really only two choices today, Adaptec and Avago (formerly >> LSI, they also control the former Areca product line). > > I don't believe that is correct. LSI acquired 3ware, and Avago

Re: [CentOS] Internal RAID controllers question

2016-05-09 Thread Gordon Messmer
On 05/08/2016 06:20 PM, John R Pierce wrote: there are really only two choices today, Adaptec and Avago (formerly LSI, they also control the former Areca product line). I don't believe that is correct. LSI acquired 3ware, and Avago acquired LSI. So, Avago owns the 3ware and LSI technology,

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Mike Mohr
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,

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Valeri Galtsev
On Sun, May 8, 2016 8:42 pm, Digimer wrote: > 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

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Valeri Galtsev
On Sun, May 8, 2016 8:20 pm, John R Pierce wrote: > On 5/8/2016 6:10 PM, Valeri Galtsev wrote: >> Can we leave this thread just to thoughts I >> solicited about which of hardware RAID card manufacturers will still >> exists in close future. > > > predicting the future? yeah, well. > > > there

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Digimer
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

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread John R Pierce
On 5/8/2016 6:10 PM, Valeri Galtsev wrote: Can we leave this thread just to thoughts I solicited about which of hardware RAID card manufacturers will still exists in close future. predicting the future? yeah, well. there are really only two choices today, Adaptec and Avago (formerly LSI,

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Valeri Galtsev
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

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Valeri Galtsev
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 have >>>

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread John R Pierce
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

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Valeri Galtsev
On Sun, May 8, 2016 7:12 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

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread Digimer
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

Re: [CentOS] Internal RAID controllers question

2016-05-08 Thread John R Pierce
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

[CentOS] Internal RAID controllers question

2016-05-06 Thread Valeri Galtsev
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