Right, that is a bit of a show stopper for those SSD (the Intel needs
SATA 6Gb/s and the Sammy's need PCIe 3.0 to perform to their rated specs).
regards
Mark
On 16/07/17 04:12, Charles Nadeau wrote:
Mark,
The server is a . It doesn't really work with SATA drives. And when
you find one that is compatible, it is only used at 3Gb/s with a
maximum of 50000 IOPS (a well know caracteristic of the HP P410i SAS
RAID controller). I am looking at getting a Kingston Digital HyperX
Predator that I could use in one of the PCIe 2.0 x4 slot. However I am
worried about the "thermal runaway", i.e. when the server can't get a
temperature reading from a PCIe card, it spins the fans at full speed
to protect the server against high temperature. The machine being next
to my desk I worry about the deafening noise it will create.
Thanks!
Chales
On Sat, Jul 15, 2017 at 1:57 AM, Mark Kirkwood
<mark.kirkwood@xxxxxxxxxxxxxxx <mailto:mark.kirkwood@xxxxxxxxxxxxxxx>>
wrote:
Thinking about this a bit more - if somewhat more blazing
performance is needed, then this could be achieved via losing the
RAID card and spinning disks altogether and buying 1 of the NVME
or SATA solid state products: e.g
- Samsung 960 Pro or Evo 2 TB (approx 1 or 2 GB/s seq scan speeds
and 200K IOPS)
- Intel S3610 or similar 1.2 TB (500 MB/s seq scan and 30K IOPS)
The Samsung needs an M.2 port on the mobo (but most should have
'em - and if not PCIe X4 adapter cards are quite cheap). The Intel
is a bit more expensive compared to the Samsung, and is slower but
has a longer lifetime. However for your workload the Sammy is
probably fine.
regards
Mark
On 15/07/17 11:09, Mark Kirkwood wrote:
Ah yes - that seems more sensible (but still slower than I
would expect for 5 disks RAID 0).
--
Sent via pgsql-performance mailing list
(pgsql-performance@xxxxxxxxxxxxxx
<mailto:pgsql-performance@xxxxxxxxxxxxxx>)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
<http://www.postgresql.org/mailpref/pgsql-performance>
--
Charles Nadeau Ph.D.
http://charlesnadeau.blogspot.com/
--
Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance