[ovirt-users] Good practices

[Fabrice Bacchella]

> Le 8 août 2017 à 04:08, FERNANDO FREDIANI <fernando.frediani at upx.com> a écrit :

> Even if you have a Hardware RAID Controller with Writeback cache you will have a significant performance penalty and may not fully use all the resources you mentioned you have.
> 

Nope again,from my experience with HP Smart Array and write back cache, write, that goes in the cache, are even faster that read that must goes to the disks. of course if the write are too fast and to big, they will over overflow the cache. But on todays controller they are multi-gigabyte cache, you must write a lot to fill them. And if you can afford 40Gb card, you can afford decent controller.