We currently operate four different Moodle servers, typically with 15K drives in Raid 10. Our next server will utilize SSD drives in Raid 10 which we plan to compare against our standard servers.
Has anyone done this?
What type of performance increase did you see?
Were you able to support more users?
i5-2400 @ 3.1 Ghz
32GB DDR3 1333
Adaptec 6405 with 512Mb Cache
4x 128Gb Samsung 830 SSD
Raid 10 configuration
I would expect a performance boost only if my disc subsystem has been the bottleneck.
BTW, wenn you say "15K drives" you mean the discs spin at 15000 rpm? They must be making a rattle like jet engines! Did you measure the performance advantage they have over, say 7200 rpm disks? Worth doing it before Greenland loses its glaciers.
I did a random search on 15000 rpm discs and got these:
I don't think this is going to give you the ability to support more users. More users usually means more RAM and increasing your MySQL buffer pool to reduce disk I/O needed as queries access
tables. In short start there then move into the disk I/O and faster drives.
BTW I have no idea how many concurent users you are running so 32GB of DDR3 may be perfectly fine for your enviorment.