59 replies to this topic

[m.oreilly]

thanks strom, but i think they are sitting snug as they are. i just want to be done with it and start loading apps and stuff. they are attached to the inside walls of the optical drive bay area. i used knurled knob pci plate screws to secure them. you would think that, because they are solid state, they would be silent and motionless...they sometimes make "ping" noises, and they vibrate (making the computer case sorta "buzz" along in simpathy).

[stormrosson]

ok buddy just thought I'd throw that out there for ya, ps, I have 2 of those patriots on the way . Something to play with on the perc 5i. I prolly will need a little guidance with the alignment/offset. ummmmm did u have to use diskpart or can u hook them too your rig as a slave and do it with win7 disk management tools? ....u can pretty much eliminate that case buzz by mounting drives with velcro

Edited by stormrosson, 06 February 2009 - 04:40 PM.

[stormrosson]

ok I studied the ocz pages and I think I have it fingered out.........so with 4 disks in raid 0 u used a 256k offset and a 256k stripe, is that correct?....alritey just did a dry run on an old sata disk I have layin around, settin the alignment and offset is a piece of cake.....now bring on the ssd's

Edited by stormrosson, 06 February 2009 - 08:09 PM.

[m.oreilly]

[stormrosson]

ok I have 2 of the patriots on the way, I'll play with them on the perc and when I get hooked I'll get 2 more and prolly a new controller oh yeah MO should I align the drives individually or both in the array?

Edited by stormrosson, 06 February 2009 - 09:42 PM.

[m.oreilly]

do the array, as doing single drives might clog up the works...
i look forward to the perc results...

[stormrosson]

thx buddy

[stormrosson]

here's 2 patriot ssd's just like MO's ,raid 0, 1 meg stripe, perc 5i controller,256k offset.. e.jpg]

[m.oreilly]

super. then hdtach looks about right. thing is, is if you make the offset smaller than the stripe...the bench exceeds the possible throughput of the drives and cache. hdd benches lose it. the hdtach is the one here, and a good barometer of the linear throughput. man, i thought you got snowed in

[stormrosson]

yep hdtach is quite consistant thru all the stripes I tested (128,256,512,1024), I thought I read that the offset and stripe have to be divisable by 4096 (4k) or the cluster size value, if u get a even parity number it should be viable. Also read talk of the use if larger stripe size seemed promising, but the test controller didn't allow a 1 meg stripe so I tried it and it feels good and freakin snappy as hell......btw have 2 more drives on the way I will prolly experiment more with possibly diff offset later .....someday, but as for now I'm fried (u gotta love the .3 ms acccess )

Edited by stormrosson, 12 February 2009 - 02:59 PM.

[m.oreilly]

awesome, can't wait to see your 4 drive results. i'll experiment more when the next win7 beta/rc becomes available...

[m.oreilly]

the adaptec controller has a setting to adjust for small random file transfers over larger sequential ones. the default "dynamic" is what i have been using, but trying out the "oltp/database"...

here is the stock "dynamic" (default) adaptec setting using 4x v2 raid0:



...with optional "oltp/database":

[m.oreilly]

atto. again, the dynamic setting:



oltp/database:



i think i'll leave it here for a bit, see how daily usage feels...

[m.oreilly]

new vertex drives!

i just finished installing win7 7048 x64 on 4x 30gig vertex raid0, on the adaptec 5405:


256 stripe/alignment.

the bigger reads seem to be cramped by the onboard cache, as when i turn read caching off, they go into the 900's, but the small file reads fall quite a bit. i wish/hope adaptec gets on it with a newer firmware to address different writeback policies (al la lsi)...ssds, and here vertex in particular, seem to be hindered by their present options.

[highlander]

How much did this setup run you back Mo?