pjkenned
Senior member
here's the hd tune results for my caviar green (wd6400aacs) raid 0 array when the drives were new with a fresh win 7 64 ultimate install:
http://a4.sphotos.ak.fbcdn.net/hpho..._564193425135_44409147_32824814_4649726_n.jpg
http://forums.whirlpool.net.au/archive/817640
for some perspective, my results are better than the guy with 4x36 gb raptors in raid 0 in max, average, and burst rate, slightly better max than the guy with 2x150gb velociraptors, a little worse average, but higher burst. i remember seeing results of 2x500gb caviar blues in raid 0 that just fell short of my array.
basically, from what i've experienced, caviar greens aren't the slow-ass drives that people like to think they are. i'm really curious to hear more specifics about the OPs situation because he must have some bad drives or be doing a very specific task or something.
op if you need near-instantaneous response get an ssd, seriously.
On the suggestion for SSD, that is generally a good piece of advice.
On those showing RAID 0, RAID 5, and RAID 6 benchmarks as evidence as to why the OP is frustrated, please understand that the most likely issue for the OP's problem is not throughput, and is instead IOPS (IOPS when t=0 and your drive is spun down = zero). Therefore, 15K 2.5" SAS drives are going to be much better than a RAID 0 "green" drive setup by a wide margin even if the 15K 2.5" SAS drive has 1/4 the throughput.
To the OP: All tier 1 storage manufacturers, Tier 1 RAID controller manufacturers, and even a lot of storage platforms such as Solaris/ZFS use tiered storage as a fundamental building principal. The idea is that one uses low cost/ slow storage to do massive archiving, and then move data to faster storage tiers the more frequently data is accessed.
This is pretty basic stuff... even consumer players are getting in like the Z68 Intel PCH and some of the low cost Marvell controllers.