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i want to use different pools for my sata and ssd disks. (one big pool for slow sata data and one small for fast ssd) as i will use it within the same servers i will need to have different root buckets and then make an ssd and an sata host for each real host. or is there any simpler way? i think...

isnt it possible to mixe sas,sata sas disk using weights for the disks? example weight 1 for all sata disks and weight 2 for all sas disks?

so many options... ufff but if i use the option of 3 osd per ssd i think with more then 10 osd's its not woth to use ssds. because for 1 ssd i can buy 2-3 1TB spinners. so i will have tice the amount of spinners for the same money but with less speed because of journal on same disk. but then i...

i think my first setup will just be a single host no network to check speed of pure spinnes vs ssd & spinners and the ratio etc. firefly has the new option not to use journals anymore. but they write it is experimental... so not an option for production in 2014 .... :-( @udo -> your ssd Corsair...

would be interesting how much troughoutput you get in a virt machine. and 4k in virtmachine. also with the host. uhh so many servers and ssds for ceph cluster is not in the budget right at the moment :-(

the new samsung 834 datacenter ssd has the same TBW for the 120 and 256GB disk... so with 3 disks it should be enough to use the smaller (and much cheaper) 120gig ssd? 4k io - inside a virtual machine on windows with crystal diskmark... what is quiete interresting too. and on host level with fio...

btw. what is your throughput and what your 4k io? to have some numbers to calculate. thank you!

so you have 6 ssds and 6 spinners in one node? thats finally a 1:1 for ssd:spinner how fast are your ssds? maybe with faster ones i could use 4 spinners? because with so many spinners makes a bit difference to use 3,4 or 5:1 cachecade also is interesting. the same with the new firefly cache...

Hi,we are allready running some proxmox hosts. no its is finally time to get ceph running in production :-) - testing with simple small 3 ceph node cluster went very well.... we will use 3 identical machines with 1 proxmox disk, 3 ssd for journals (firefly without journal is experimental...

Hi,we are allready running some proxmox hosts. no its is finally time to get ceph running in production :-) - testing with simple small 3 ceph node cluster went very well....we will use 3 identical machines with 1 proxmox disk, 3 ssd for journals (firefly without journal is experimental only..)...