Re: What a maximum theoretical and practical capacity in ceph cluster?

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

 



> By now we decide use a SuperMicro's SKU with 72 bays for HDD = 22 SSD +
> 50 SATA drives.
> Our racks can hold 10 this servers and 50 this racks in ceph cluster =
> 36000 OSD's,
> With 4tb SATA drives and replica = 2 and nerfull ratio = 0.8 we have 40
> Petabyte of useful capacity.
>
> It's too big or normal use case for ceph?

I'm a bit worried about the replica count:
The chances of 2 disks failing of 25000 at the same time becomes very significant.  (or a disk + server failure)
Without doing any math my gut feeling says that 3 replica's is still not very comfortable. (especially if the disks come from the same batch)

Cheers,
Robert van Leeuwen

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com




[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