This is without Write-back cacheQuote:
Originally Posted by xTr33m sammich!
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This is without Write-back cacheQuote:
Originally Posted by xTr33m sammich!
Very nice, Trike. Is that burst speed a bug? How are you getting?Quote:
Originally Posted by Trike
_______________________________
Deskstar 7K80 SATA2 8MB 0A30356
My drives are quite old. This system has been up since 11/05. Win XP Pro SP2. Clean system and benchies havn't changed at all I think.
Ran these tests yesterday.
Raid 0 - Nvidia nF4 Stripe 153 Gb; 4Kb cluster size
http://img504.imageshack.us/img504/2488/hdtach01mr9.jpg
http://img508.imageshack.us/img508/9486/atto03zi0.jpg http://img504.imageshack.us/img504/3788/hdtune01ds1.jpg
I've got a few questions. Are 500 Mb/s read speeds or bursts useless in SATA drives? Or is that only when you're transfering to another port/interface? I realize a SATA I drive can only receive 150 Mb/s.
The more drives you add in RAID 0, what happens to the average seek time? It's reduced right? And why are some peoples graphs straight all the way across? I know that's better than the slope. That means they can read larger files faster. . .? Why? Better access, latency times?
v3.0.4.0/ 4 x raptor
my c:\ drive,
http://img300.imageshack.us/img300/3760/4xqf7.jpg
2x 36GB Raptors in RAID0 - very nice to those of you getting sub 10ms access times on 7200RPM drives.
http://img207.imageshack.us/img207/1593/hdtunerm1.jpg
Shaun.
Write back cache set to write through.
http://i194.photobucket.com/albums/z...ta3parti-1.jpg
2x Seagate 15k rpm U320 raid config on a lsi megaraid u320-2E controller pci-E
at a p5k-E board
direct i/o andr write trough
http://rol-co.nl/images/hdtach2.jpg
think this must be faster .....or not?
first time scsi so some difficulty's
4X 36GB 16MB Cache Raptors on a Dell PERC 5/i controller. Would have thought it'd have been faster than this.
160GB Seagate Barracuda:
http://img233.imageshack.us/img233/7...t316081oi8.jpg
Look at my sig to see what these HDDs are running on. ICH9 chip set btw....
Pure Speed vs Size & Speed:
150 gig Raptor:
http://i21.tinypic.com/ok02kl.png
750 gig WD Cavair:
http://i20.tinypic.com/2utpyxc.png
I hope this gives someone a good comparison of both of WDs top drives.
2x 36GB 8MB catch WD Raptors RAID0 ICH9r chipset, drivers were built in my XP disc i made
http://img.photobucket.com/albums/v6...sapete/HD2.jpg
I have 2 more on the way to run 4 in total in RAID0 via the ICH9r chipset
3x Barracudas 7200.10 320GB with one 300GB Raid0 slice stripe size 64kb and the rest, 400GB in Raid5 stripe size 128kb, P5B DLX ICH8r
4 WD Raptors 36GB 8MB catch, RAID0 32K strip, XP Pro SP2, Directly on the ICH9R
unless i've missed some settings or stripe size then nvidia raid sucks (as i already predicted). install was easy tho only took few mins from bios.
3x Seagate 7200.10 500gb
1x WD 500gb
9.92 driver
64kb stripe size
no e-sata used
Vista x64
somethings bad... i got 133MB/s with TWO 7200.10 on nVidia raid... under Vista too.
oh, wait, its raid-5, then its ok...
if i were you, i would use 2 of the seagates in raid 0 + the other seagate+WD in raid-1 for backups...
tried 0+1 and saw no real difference with nvidia software raid.Quote:
Originally Posted by Mad_Man
3x Seagate 7200.10 500gb
1x WD 500gb
9.92 driver
Vista x64
Evga 680i
Q6600 @3.6 450fsb
Ballistix 8500 @600 54410 (2:3)
all settings the same as above
without raid card i might as well go raid 5 for additional space as theirs no performance gain showing in this benchmark.
I'm just wondering what is the difference of using the Intel RAID configuration and a dedicated RAID card? I want to use RAID 0, but there's no data protection in the event the RAID array fails. How's RAID 1 speed when compared to a single drive setup?
finally got time to mess around with raid stripe size on 680i and 3x Seagate 7200.10 500gb and WD 500gb drives.
raid 0+1: 2x Seagate for raid 0, other hdd's for +1(mirror).
32kb: 32kb was the fastest on the 680i as seen in pic on left.
4/8kb: averaged around 25-35 mb/s respectively.
16kb: averaged 50-60mb/s
64kb: averaged 85~mb/s as seen in pics posted earlier
128kb: was pretty much the same as 64kb averaging around 85mb/s
raid 5: didn't test as much on raid 5 as there was the inherent raid 5 write penalty killing write speeds :( averaging copy from single hdd to raid 5 array was 25-28mb/s. read on the other hand was very good @50~mb/s (which was the fastest the single hdd could do copy)
64kb: did an average of 85mb/s as seen in above posts (still with pitiful write speeds)
32kb: close to the same as 64kb
16kb: is the golden as far as tested with an average of 97.6mb/s with a maximum of 118mb/s, pic on right
if i misinterprate any settings let me know
here are mine (as per drives connected to main rig in sig)
the 36GB Raptor & i-RAM have NTFS & default allocation size unit
Raptor36 is 22.57/34.4 GB full
i-RAM is 3.75/3.98 GB full
the RAID0 array (consisting of 2x RaptorX) is 8K stripe size
the RAID0 is 16/278 GB full
for anyone with a Gigabyte i-RAM connected to a ULi-M1575 SATA, i found that *WITH* drivers installed (vs2.20) that my HDTune results for i-RAM would increase the max MB/s by about 3MB/s, it would decrease min MB/s by about 10MB/s, & it would also INCREASE access time to approx. ~ 0.2-0.4ms (up from 0.0 :D ) - so obviously i opted NOT to install the ULi drivers :D:D:D
RAID 1 is the same speed as a single HDD, just gives you a total and instantly updating backup of the 1st disk. If you want speed and data protection go with RAID-5. With RAID 5 if a disk goes down you can insert a spare drive and rebuild the array with no data loss. Theres also RAID 0+1 or 10, take 2 sets of drives in RAID 1 (for data backup) and put the 2 sets in RAID 0 (for speed). Performance varys with southbridge. I got 155MB/sec with 4 raptors on the Intel ESB2 southbridge but nearly 200MB/sec on a Dell PERC 5/i controller card. Not being a storage guru I may well ahve missed a vital spetting o nthe ESB2 RAID though.Quote:
Originally Posted by Sgt_Strider
Well ... another 74gig Raptor :)
http://img455.imageshack.us/img455/3...dcwd740mp6.png
my new Raptor 36G; 16MB; NCQ OFF
top 90 MBps
low 56 MBps
avg 78 MBps
Seagate SAS 147.1gb 15k Cheetah T10 In RAID 0 on a Dell Perc5i PCIe Controller card running Vista Ultimate on a DFI 590 SLI...