nabble.30.miller_2...@spamgourmet.com wrote:
The database server is a quad core machine, so it sounds as though software RAID should work fine for the present setup. However, it sounds as though I should put some money into a hardware RAID controller if the database becomes more active. I had assumed RAID-5 would be fine, but please let me know if there is another RAID level more appropriate for this implementation. Thanks for the valuable insight!
raid-5 performs very poorly on random small block writes, which is hte majority of what databases do. raid10 is the preferred raid for databases.
btw: re earlier discussion of raid controllers vs software... I'm surprised nooone mentioned that a 'real' raid controller with battery backed writeback cache can hugely speed up committed 8kbyte block random writes, which are quite often the big bottleneck in a transactional database.
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