Re: [ovirt-users] Good practices
Le 8 août 2017 à 04:08, FERNANDO FREDIANI
<fernando.frediani(a)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.