Re: [pve-devel] SSD only Ceph cluster

2014-09-01 Thread Alexandre DERUMIER
p.duerham...@velartis.at À: Alexandre DERUMIER aderum...@odiso.com Cc: pve-devel@pve.proxmox.com, Dietmar Maurer diet...@proxmox.com Envoyé: Lundi 1 Septembre 2014 16:47:59 Objet: AW: AW: [pve-devel] SSD only Ceph cluster Yes but with hacks like turn of the crush update on start etc.. http

[pve-devel] SSD only Ceph cluster

2014-08-30 Thread Martin Maurer
Hi, I am looking for the best suitable SSD drives for a Proxmox VE Ceph cluster in our test-lab. The current plan is to use 4 x 512 GB SSD per server for OSD. (12 * 512 GB drives, total net capacity of 2 TB , with a replication of 3.) Based on features (power loss protection) and price, the

Re: [pve-devel] SSD only Ceph cluster

2014-08-30 Thread Michael Rasmussen
On Sat, 30 Aug 2014 10:59:17 + Martin Maurer mar...@proxmox.com wrote: Hi, I am looking for the best suitable SSD drives for a Proxmox VE Ceph cluster in our test-lab. The current plan is to use 4 x 512 GB SSD per server for OSD. (12 * 512 GB drives, total net capacity of 2 TB , with

Re: [pve-devel] SSD only Ceph cluster

2014-08-30 Thread Michael Rasmussen
On Sat, 30 Aug 2014 10:59:17 + Martin Maurer mar...@proxmox.com wrote: I am looking for the best suitable SSD drives for a Proxmox VE Ceph cluster in our test-lab. The current plan is to use 4 x 512 GB SSD per server for OSD. (12 * 512 GB drives, total net capacity of 2 TB , with a

Re: [pve-devel] SSD only Ceph cluster

2014-08-30 Thread Dietmar Maurer
When you are to compare specs for SSDs or HDD's for that matter to be used in a remote storage what do you consider most important? Max read/write MB/s or read/write IOPS? Personally I should think when we are looking at SSD's max read/write MB/s is irrelevant since the network will always

Re: [pve-devel] SSD only Ceph cluster

2014-08-30 Thread Alexandre DERUMIER
...@proxmox.com À: pve-devel@pve.proxmox.com Envoyé: Samedi 30 Août 2014 12:59:17 Objet: [pve-devel] SSD only Ceph cluster Hi, I am looking for the best suitable SSD drives for a Proxmox VE Ceph cluster in our test-lab. The current plan is to use 4 x 512 GB SSD per server for OSD. (12 * 512 GB

Re: [pve-devel] SSD only Ceph cluster

2014-08-30 Thread Dietmar Maurer
The Crucial MX100 provides 90k/85k IOPS. Those numbers are from specs, so I am not sure if you can get that in reality? No, I think you can reach 90K maybe for some seconds when they are empty ;) check graph here: http://www.anandtech.com/show/8066/crucial-mx100-256gb-512gb-review/3