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Old March 19, 2010, 11:50 PM
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Quote:
Originally Posted by gingerbee View Post
ya I know beside million dollar company's but it was a a joke hehe
joke?

that was Uninspiring, Unfunny, and Unreadable. Jim Rome would call that a triple U. Anyone with half a brain would know a SSD is faster in RAID... why add un-necessary thread space to what COULD have been a constructive conversation.

Gingerbee, you offer nothing constructive towards the thought, question or inspiration of the parent post to this thread. The signal to noise ratio of this forum is getting worse rapidly, mainly because of posts like this. Sorry for making you the whipping boy here (because i see you actually contribute to this forum too!!!) but there are many others here to blame for this same act. Case in point... look at all the thread crapping in the Mac forum, it's a joke.

if you want to type garbage for the sake of typing, join the #hardwarecanucks IRC channel

LCDGUY: you are going to have to help me out with the IO Meter settings. I have not used this program before and i don't see a setting that explicitly states "command queue". Is that...

1) # of outstanding i/o's
or
2) Test Connection Rate?

I also noticed that you have 100% read, 0 % writes on your benches.... how about you post a 100% read, and a 100% write bench?
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Last edited by grinder; March 20, 2010 at 12:13 AM.
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Old March 20, 2010, 08:08 AM
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# of outsanding Io's is your Queue depth.

also on that page make sure you set a maxium disk size. if you leave it blank it will create a test file until all hdd space is filled. i used something around 489,000,000 which comes to around a 250GB test file.
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Old March 20, 2010, 08:50 AM
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LCDguy, are you happy with the speed? Was it what you were expecting? i've been thinking of making a proper file server for a while now (im tired of sharing from a drive on my pc), but I'm not sure if I can justify the cost.
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Old March 20, 2010, 09:03 AM
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well the cost is all depended on how advanced of technology you want (SAS expander vs Sata) and how much space you want. This build after the drives are bought is probably in the 3k+ price range. But then again i built a 24 drive SAS backplaned monster with 15TB of usable space in3 raid units. You may not need 15 TB. The speed is quite nice. Put it this way. Write performance on raid 10 was around 200MB/s sustained on the server. since gigabit basically maxes out at 125MB/s when using jumbo frames your disk IO will never be the limiting factor (unless you put in 10gbe). I have since reconfigured my array into a raid 6 volume and will post new benchmarks. The first step would be in deciding how much space you need. Here are some examples of what i would do. in all cases i am going to be using a raid card since i like the speed and security of hardware raid.

Small File Server. (under $1500)

Raid Card: 3ware 9690SA-4i or 9650 or Perc5i/6i
Raid Level: 5
Disks: 1TB or 2TB WD Blacks (greens can cause issues since they power down when not in use)
Usable space - 3TB using 1TB disks and 6TB using 2TB disks, Failure of 1 disk is allowed before array fails

Medium File Server (under $2200)

raid Card: 3ware 9690SA-8i or Perc6i
Raid Level 6
Disks: 1TB or 2TB WD Blacks (greens can cause issues since they power down when not in use)
Usable Space: 6TB using 1Tb disks, 12TB using 2TB disks

Large File Server ($3k+)

Raid Card: 3ware 9690SA-4i or any other RAID SAS Controller
Raid Level: 6
Disks: 1TB or 2TB WD Blacks (greens can cause issues since they power down when not in use)
Usable Space: 6TB using 1TB drives per array, 12TB of space using 2TB disks per array.

The pricing is rough ballparks they could be more or less depending on hard selections. obviously buying a used perc is alot chepaer than a brand new raid controller. and 1TB drives are considerably cheaper than 2Tb drives.

anyway back to the benchmarks. These are all read tests. Lots of bandwidth.





and yes i am quite content with the speed
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Old March 20, 2010, 11:21 AM
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Thanks for the help lcdguy

256KB, 8 QD, both sequential, one is 100% read, the other is 100% write

cheers
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Old March 20, 2010, 12:38 PM
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Quote:
Originally Posted by grinder View Post
Thanks for the help lcdguy

256KB, 8 QD, both sequential, one is 100% read, the other is 100% write

cheers
those are some pretty nice numbers what HDD's are you running there. Because i doubt thier regular consumer SATA drives.
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Old March 20, 2010, 12:44 PM
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thanks. Just 5 seagate 1TB .12's in RAID5... going to add a hot spare in a week for double drive failure redundancy.
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Old March 20, 2010, 12:46 PM
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must be the controller then. i wish i could get high read speeds like that.
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Old March 20, 2010, 12:55 PM
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yeah, because of all the parity calculations the controller really dictates the performance of the array.

Intel Raid Controller SRCSASBB8i

I have been working with adaptec units for so long i wanted to try something different so i bought the Intel.
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