On Fri, September 8, 2017 9:48 am, hw wrote:
m.roth@5-cent.us wrote:
hw wrote:
Mark Haney wrote:
<snip> >> BTRFS isn't going to impact I/O any more significantly than, say, XFS. > > But mdadm does, the impact is severe. I know there are ppl saying > otherwise, but I´ve seen the impact myself, and I definitely don´t > want > it on that particular server because it would likely interfere with > other services. <snip> I haven't really been following this thread, but if your requirements are that heavy, you're past the point that you need to spring some money and buy hardware RAID cards, like LSI, er, Avago, I mean, who's bought them more recently?
Heavy requirements are not required for the impact of md-RAID to be noticeable.
Hardware RAID is already in place, but the SSDs are "extra" and, as I said, not suited to be used with hardware RAID.
Could someone, please, elaborate on the statement that "SSDs are not suitable for hardware RAID".
Thanks. Valeri
It remains to be tested how the hardware RAID performs, which may be even better than the SSDs. _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++