
Thank You Strahil ! On Thu, Oct 15, 2020 at 8:05 AM Strahil Nikolov <hunter86_bg@yahoo.com> wrote:
Please clarify what are the disk groups that you are referring to? Either Raid5/6 or Raid10 with a HW controller(s).
Regarding your statement "In JBOD mode, Red Hat support only 'replica 3' volumes." does this also mean "replica 3" variants ex. "distributed-replicate" Nope, As far as I know - only when you have 3 copies of the data ('replica 3' only).
Best Regards, Strahil Nikolov
Thanks Strahil !
More questions may follow.
Thanks Again For Your Help !
On Wed, Oct 14, 2020 at 12:29 AM Strahil Nikolov <hunter86_bg@yahoo.com> wrote:
Imagine you got a host with 60 Spinning Disks -> I would recommend you to split it to 10/12 disk groups and these groups will represent several bricks (6/5).
Keep in mind that when you start using many (some articles state hundreds , but no exact number was given) bricks , you should consider brick multiplexing (cluster.brick-multiplex).
So, you can use as many bricks you want , but each brick requires cpu time (separate thread) , tcp port number and memory.
In my setup I use multiple bricks in order to spread the load via LACP over several small (1GBE) NICs.
The only "limitation" is to have your data on separate hosts , so when you create the volume it is extremely advisable that you follow this model:
hostA:/path/to/brick hostB:/path/to/brick hostC:/path/to/brick hostA:/path/to/brick2 hostB:/path/to/brick2 hostC:/path/to/brick2
In JBOD mode, Red Hat support only 'replica 3' volumes - just to keep
On Wed, Oct 14, 2020 at 7:34 AM C Williams <cwilliams3320@gmail.com> wrote: that in mind.
From my perspective , JBOD is suitable for NVMEs/SSDs while spinning
disks should be in a raid of some type (maybe RAID10 for perf).
Best Regards, Strahil Nikolov
В сряда, 14 октомври 2020 г., 06:34:17 Гринуич+3, C Williams <
cwilliams3320@gmail.com> написа:
Hello,
I am getting some questions from others on my team.
I have some hosts that could provide up to 6 JBOD disks for oVirt data
(not arbiter) bricks
Would this be workable / advisable ? I'm under the impression there
should not be more than 1 data brick per HCI host .
Please correct me if I'm wrong.
Thank You For Your Help !
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