Sorry. I meant SSD Solid state disks. Thanks, Gagan On Wed, Sep 14, 2022 at 12:49 PM Janne Johansson <icepic.dz@xxxxxxxxx> wrote: > Den ons 14 sep. 2022 kl 08:54 skrev gagan tiwari > <gagan.tiwari@xxxxxxxxxxxxxxxxxx>: > > Hi Guys, > > I am new to Ceph and storage. We have a requirement of > > managing around 40T of data which will be accessed by around 100 clients > > all running RockyLinux9. > > > > We have a HP storage server with 12 SDD of 5T each and have set-up > hardware > > RAID6 on these disks. > > You have only one single machine? > If so, run zfs on it and export storage as NFS. > > > HP storage server has 64G RAM and 18 cores. > > > > So, please advise how I should go about setting up Ceph on it to have > best > > read performance. We need fastest read performance. > > With NFSv4.x you can have local caching in the NFS client, that might > help a lot for read perf if those 100 clients have local drives also. > > The reason I am not advocating ceph in this case is that ceph is built > to have many servers feed data to many clients (or many processes > doing separate reads) and you seem to have a "single-server" setup and > in this case, the overhead of the ceph protocol will lower the > performance compared to "simpler" solutions like NFS which are not > designed to scale in the way ceph is. > > A smaller point is that for both zfs and ceph, it is not advisable to > first raid the separate drives and then present them to the > filesystem/network, but rather give zfs/ceph each individual disk to > handle it at a higher level. But compared to the "I have one or I have > many servers to serve file IO" it is a small thing. > > -- > May the most significant bit of your life be positive. > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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