Benjamin Arai wrote:
> Obviously, I have done this to improve write performance for the update
> each week. My question is if I install a 3ware or similar card to
> replace my current software RAID 1 configuration, am I going to see a
> very large improvement? If so, what would be a ball park figure?
The key is getting a card with the ability to upgrade the onboard ram.
Our previous setup was a LSI MegaRAID 320-1 (128MB), 4xRAID10,
fsync=off. Replaced it with a ARC-1170 (1GB) w/ 24x7200RPM SATA2 drives
(split into 3 8-drive RAID6 arrays) and performance for us is through
the ceiling.
For OLTP type updates, we've gotten about +80% increase. For massive
1-statement updates, performance increase is in the +triple digits.