Sv: Latest advice on SSD?

[Andreas Joseph Krogh <andreas@xxxxxxxxxx>]

På tirsdag 10. april 2018 kl. 04:36:27, skrev Craig James <cjames@xxxxxxxxxxxxxx>:

One of our four "big iron" (spinning disks) servers went belly up today. (Thanks, Postgres and pgbackrest! Easy recovery.) We're planning to move to a cloud service at the end of the year, so bad timing on this. We didn't want to buy any more hardware, but now it looks like we have to.

 

I followed the discussions about SSD drives when they were first becoming mainstream; at that time, the Intel devices were king. Can anyone recommend what's a good SSD configuration these days? I don't think we want to buy a new server with spinning disks.

 

We're replacing:

  8 core (Intel)

  48GB memory

  12-drive 7200 RPM 500GB

     RAID1 (2 disks, OS and WAL log)

     RAID10 (8 disks, postgres data dir)

     2 spares

  Ubuntu 16.04

  Postgres 9.6

 

The current system peaks at about 7000 TPS from pgbench.

 

With what arguments (also initialization)?

 

--

Andreas Joseph Krogh