Re: most bang for buck with ~ $20,000

["Joshua D. Drake" <jd(at)commandprompt(dot)com>]

> In which case, which is theoretically better (since I don't have a 
> convenient test bed at the moment) for WAL in a write-heavy environment? 
> More disks in a RAID 10 (which should theoretically improve write 
> throughput in general, to a point) or a 2-disk RAID 1? Does it become a 
> price/performance question, or is there virtually no benefit to throwing 
> more disks at RAID 10 for WAL if you turn off journaling on the filesystem?

Over 4 drives, I would gather that RAID 10 wouldn't gain you anything. 
Possibly over 6 or 8 however, it may be faster because you are writing 
smaller chunks of data, even if two copies of each.

Sincerely,

Joshua D. Drake


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