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Pagefile should not be put on the SSD, but rather on the empty 7200.11. It is not the fastest drive, but with its unreliable nature it is the best drive for the pagefile. The SSD theoretically looks fast but for writes they stink.You should avoid putting any valuable data on the 7200.11 disks if you do not have a sound backup plan. In my case the failure rate of the 7200.11 disks was 5 out of 7.
I know you have said to avoid partitioning drives, but Windows 7 creates a reserve 100 MB partition as part of the clean install. Is that a problem? And what is your take on the velociraptor (for pagefile & previews)?
1) Do a Windows format on your SSD before you load Windows; that way you can skip the strange partition that Win7 install wants to put on a "fresh" drive
2) You will get much better CS5.5 performance with 2 RAID 0 arrays than with individual drives:
- configure 2 2 drive arrays with you matching drives
- remove Windows "indexing" from both arrays; set drive hardware policy to "enable write caching" and "turn off Windows write-cache buffer flushing" on both arrays; test both arrays for sustained reads and writes using a utility such as HD Tune Pro (set block size to 2MB) and make sure you are getting at least 100MB/sec performance from both arrays for reads and writes; if you are not, figure out whether you have a driver or drive issue and resolve
3) format the arrays using GPT partitioning and 4k cluster size
4) put projects/media on the fastest array; put scratch, media cache, media cache DB, and export to the other array
Your system should NOT be sluggish, unless you have something wrong at this point!
Test with PPBM5 and make sure results line up with similar cpu/drive systems.
Regarding where to put Windows pagefile, it doesn't really matter too much since you have 16GB of RAM and Windows will not be needing the pagefile for much. I'd probably put it on the slower RAID array.