On Mon, Sep 29, 2014 at 08:58:38AM +0000, Dan Van Der Ster wrote: > Hi Emmanuel, > This is interesting, because we?ve had sales guys telling us that those Samsung drives are definitely the best for a Ceph journal O_o ! > The conventional wisdom has been to use the Intel DC S3700 because of its massive durability. > > Anyway, I?m curious what do the SMART counters say on your SSDs?? are they really failing due to worn out P/E cycles or is it something else? > Here are our current stats (health is the Wear_leveling_count): hyp-prs-01 SSD Status: sda / 3622 hours / 8800.107 GB written / 58.311 GB/day / Health: 82 % SSD Status: sdb / 3622 hours / 9949.785 GB written / 65.929 GB/day / Health: 80 % hyp-prs-02 SSD Status: sda / 3620 hours / 9516.849 GB written / 63.095 GB/day / Health: 81 % SSD Status: sdb / 3620 hours / 9716.926 GB written / 64.421 GB/day / Health: 80 % hyp-prs-03 SSD Status: sda / 3530 hours / 9501.308 GB written / 64.598 GB/day / Health: 82 % SSD Status: sdb / 3530 hours / 9494.685 GB written / 64.553 GB/day / Health: 80 % hyp-pa2-02 SSD Status: sdc / 5692 hours / 11585.309 GB written / 48.848 GB/day / Health: 80 % SSD Status: sdd / 5692 hours / 12771.698 GB written / 53.851 GB/day / Health: 77 % hyp-pa2-03 SSD Status: sdc / 5691 hours / 12571.167 GB written / 53.014 GB/day / Health: 78 % SSD Status: sdd / 5691 hours / 12882.846 GB written / 54.329 GB/day / Health: 76 % hyp-pa2-04 SSD Status: sdc / 5691 hours / 12542.344 GB written / 52.893 GB/day / Health: 76 % SSD Status: sdd / 5691 hours / 13534.304 GB written / 57.076 GB/day / Health: 77 % hyp-pa3-02 SSD Status: sdc / 8747 hours / 30142.858 GB written / 82.705 GB/day / Health: 48 % SSD Status: sdd / 8747 hours / 30737.615 GB written / 84.337 GB/day / Health: 40 % hyp-pa3-03 SSD Status: sda / 8769 hours / 32669.734 GB written / 89.414 GB/day / Health: 43 % SSD Status: sdb / 965 hours / 4006.301 GB written / 99.639 GB/day / Health: 92 % hyp-pa3-04 SSD Status: sda / 1033 hours / 4078.292 GB written / 94.753 GB/day / Health: 91 % SSD Status: sde / 49 hours / 299.994 GB written / 146.983 GB/day / Health: 99 % quadrille SSD Status: sdc / 7732 hours / 10775.406 GB written / 33.446 GB/day / Health: 80 % SSD Status: sdd / 7732 hours / 10656.070 GB written / 33.076 GB/day / Health: 81 % hora SSD Status: sdc / 7734 hours / 10978.489 GB written / 34.068 GB/day / Health: 81 % SSD Status: sdd / 7734 hours / 10978.754 GB written / 34.069 GB/day / Health: 81 % mazurka SSD Status: sdc / 7732 hours / 11983.782 GB written / 37.197 GB/day / Health: 80 % SSD Status: sdd / 7732 hours / 11803.509 GB written / 36.637 GB/day / Health: 81 % That was stats on last friday. This morning hyp-pa3-02:sdd died. So a bit under 40 for Wear_leveling_count. And this summer we lost 3 SSDs with nearly the same numbers (hyp-pa3-04:* and hyp-pa3-03:sdb) :( hyp-pa3-* is the cluster with journals on raid 1 ssds of course. -- Easter-eggs Sp?cialiste GNU/Linux 44-46 rue de l'Ouest - 75014 Paris - France - M?tro Gait? Phone: +33 (0) 1 43 35 00 37 - Fax: +33 (0) 1 43 35 00 76 mailto:elacour at easter-eggs.com - http://www.easter-eggs.com
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