Re: Strange Ceph architect with SAN storages

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Just my quick two cents here.

Technically this is possible which doesn't mean it's a good idea. I wouldn't use such a setup in a productive environment. I don't think they'll really save a lot and adding the latency etc on top not sure this is what they're really looking for.

Just for testing and for giving it a try, sure but for the rest I would go with a clear "no" instead of encouraging them to do that. 

Maybe you can tell use more about their use-case? What are they looking for, how large should this get, access protocols etc.

Kai

On 22.08.19 17:12, Brett Chancellor wrote:
It's certainly possible. It makes things a little more complex though. Some questions you may want to consider during the design..
- Is the customer aware this won't preserve any data on the luns they are hoping to reuse.
- Is the plan to eventually replace the SAN with JBOD, in the same systems? If so you may want to make your luns look like the eventual drive size and count.
- Is the plan to use a few systems with SAN and add standalone systems later? Then you need to calculate expected speeds and divide between failure domains.
- Is the plan to use a couple of hosts with SAN to save money, and have the rest be traditional Ceph storage? If so consider putting the SAN hosts all in one failure domain.
- Depending on the SAN you may consider aligning your failure domains to different arrays, switches, or even array directors.
- Remember to take the hosts network speed into consideration when calculating how many luns to put on each host.

Hope that helps.

-Brett

On Thu, Aug 22, 2019, 4:14 AM Mohsen Mottaghi <mohsenmottaghi@xxxxxxxxxxx> wrote:

Hi


Yesterday one of our customers asked us a strange request.  He asked us to use SAN as the Ceph storage space to add the SAN storages it currently has to the cluster and reduce other disk purchase costs.


Anybody know can we do this or not?! And if this is possible how we should start to architect this Strange Ceph?! Is it good or not?!

 

Thanks for your help.

Mohsen Mottaghi

_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx

_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx
-- 
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, D 90409 Nürnberg
GF:Geschäftsführer: Felix Imendörffer, (HRB 247165, AG München)

Attachment: signature.asc
Description: OpenPGP digital signature

_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx

[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux