[ceph-users] Disabling write cache on SATA HDDs reduces write latency 7 times

Виталий Филиппов vitalif at yourcmc.ru
Tue Nov 13 00:26:45 PST 2018


This may be the explanation:

https://serverfault.com/questions/857271/better-performance-when-hdd-write-cache-is-disabled-hgst-ultrastar-7k6000-and

Other manufacturers may have started to do the same, I suppose.
-- 
With best regards,
  Vitaliy Filippov
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