Tuning HD performance

category: general [glöplog]
does anyone know if there is isa ssd? id like to boost my i486 and frag at duke nukem faster...
added on the 2010-03-25 21:50:19 by Tigrou Tigrou
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Cause: Two Intel X-25 40GB SSDs forming a RAID0.
Thanks for those who passively convinced me to get SSDs. They rock.
added on the 2010-05-05 14:20:51 by xTr1m xTr1m
Oooh - Must try and get a couple of those for video scratch editing!
Btw, price and supplier?
m0d: Intel X25-V 40 GB: 99,90€.
added on the 2010-05-05 15:03:57 by xTr1m xTr1m
I think RAID0 might be wasted effort for X-25Ms, except for getting a single, larger drive out of it. You won't get improvements in seek time, and with sequential R/W speed of 250 MB/s already, you could easily run into other bottlenecks by doubling it (SATA, PCIe, etc.) Also remember that (good) software is generally written so the CPU doesn't stall while waiting for HDD access, so the scenarios in which speeds above say 250 MB/s would make any difference at all are limited by that, too.

And of course there's caching and prefetching and all sorts of stuff you can do even with a regular HDD. Local memory is faster than any SSD array, after all.

I'm still getting an SSD, though. Maybe two in a RAID, but I'm not convinced the RAID is worh it. Have you done any benchmarks with and without the RAID setup, cause that would be interesting.

Oh, and what OS are you running? Supposedly Windows 7 is much better tuned for SSDs than XP.
added on the 2010-05-05 15:33:15 by doomdoom doomdoom
Yes, it's Windows 7 x64.
added on the 2010-05-05 18:02:29 by xTr1m xTr1m
doom: the RAID can at least help the X-25's sequential write performance which isn't too "good"... but even then an Indilinx based drive might be the better idea.

And what's with RAID controllers and TRIM? Do they properly support it? If not, your SSDs will become a lot less fun as soon as 80Gigs have been written to them.
added on the 2010-05-05 19:58:59 by kb_ kb_
I've read that some RAID controllers support TRIM, but they're still very few. On the other hand that's the sort of thing that would change before you know it, so I dunno. Software RAID would be easier to deal with (and possibly just a better choice for SSDs since you wouldn't run into IOPS limits), but you can't boot from a software RAID.

Of course even without TRIM you can always just reformat the array every now and then. If you disable paging and use another drive for downloads and all that, writing 80 GB could take a while. And I think most drives do their own GC which helps, too.
added on the 2010-05-05 20:15:04 by doomdoom doomdoom