*Of course yes!*

SSD bottleneck is the SATA controller.
If you use a NVMe/PCIe controller you get from almost the same SSD 2.400MB/sec instead of 580MB/sec.

2400MB/sec x 8 =  ~19Gbit/sec
580MB/sec x 8 = ~5 Gbit/sec

If you don't trust me take a look at this benchmark between 2 really common SSD in the consumer market:
http://ssd.userbenchmark.com/Compare/Samsung-960-Pro-NVMe-PCIe-M2-512GB-vs-Samsung-850-Pro-256GB/m182182vs2385

So of course, talking about SSD, your speed is grossy the SATA controller (minus the overhead of the protocol).


Il 22/06/2017 20:35, [email protected] ha scritto:
On 22/06/2017 19:19, Massimiliano Cuttini wrote:
We are already expecting the following bottlenecks:

  * [ SATA speed x n° disks ] = 24Gbit/s
  * [ Networks speed x n° bonded cards ] = 200Gbit/s
6Gbps SATA does not mean you can read 6Gbps from that device

_______________________________________________
ceph-users mailing list
[email protected]
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
[email protected]
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

Reply via email to