How fast is your Raid / HDD?

[Snokio]

After installing and running HD tune, I thought it would be a good idea to compare raid / hdd speeds, I started this thread on another forum and discovered my raid setup was actually very slow, my results here:
 
I'm currently running a raid 5 (x3 250Gb SATA WD Hdd's)

Transfer rate:

Min 13.6 MB/sec
Max 89.3 MB/sec
Avg 52.2 MB/sec

Access time 15.4ms
 

 
Although I'm aware that a raid 5 has redundancy (parity), I did think it would be quicker, and just look at that graph, but in response to this bad performance, I order x2 samsung F3's for a raid 0, once up and running, I will post up the results.
 
Anyone else care to share?

Download Link: http://www.hdtune.com/
 
(you can also check for errors with this tool)

[Bob]

Although I'm aware that a raid 5 has redundancy (parity), I did think it would be quicker

Raid5 is almost as fast as raid0 when it comes to reading data. If what you want is high write performance however, raid5 isn't your thing. See The Raid 5 performance section in the Wikipedia article for more details

[TeaLeaf]

HD Tune Pro: ADAPTEC RAID 10 (4 x 150GB WD Raptors)

Benchmark

Test capacity: full

Read transfer rate
Transfer Rate Minimum : 21.5 MB/s (interestingly this was above 80MB/s until about 5 seconds from the end and then it dipped sharply for a couple of seconds to 21.5MB/s and then back up to 100MB/s)
Transfer Rate Maximum : 160.8 MB/s
Transfer Rate Average : 119.9 MB/s
Access Time           : 9.5 ms
Burst Rate            : 124.8 MB/s
CPU Usage             : 9.6%

[delanvital]

My old RAID 0s were faster than that, I would reconsider the setup :g:I have one of my ex-RAID disks as cache for various small files (120GB Hitachi) that does minimum 28 MB/s, maximum 59MB/s and averages on 47MB/s, so I would serious reconsider that setup...

I have presently broken up my raid and my current disk is a 30GB SSD which does 115MB/s minimum, hits a infrastructure roof at 220MB/s (flatlines) and averages about 185 MB/s (no access time and about 1-2% CPU usage)

[Jabbs]

HD Tune Pro: STM3500418AS             Benchmark

Test capacity: full

Read transfer rate
Transfer Rate Minimum : 26.7 MB/s
Transfer Rate Maximum : 131.4 MB/s
Transfer Rate Average : 98.1 MB/s
Access Time           : 15.0 ms
Burst Rate            : 171.5 MB/s
CPU Usage             : -1.0%

I don't have RAID set up at all though, just a single 500GB SATA plus other programs were running in background so not sure what impact that would have.

[DannagE]

HD Tune Pro: Intel   Raid 0 Volume Benchmark

Test capacity: full

Read transfer rate
Transfer Rate Minimum : 192.8 MB/s
Transfer Rate Maximum : 243.7 MB/s
Transfer Rate Average : 209.3 MB/s
Access Time           : 0.2 ms
Burst Rate            : 214.4 MB/s
CPU Usage             : -1.0%

[Jabbs]

HD Tune Pro: Intel   Raid 0 Volume Benchmark

Test capacity: full

Read transfer rate
Transfer Rate Minimum : 192.8 MB/s
Transfer Rate Maximum : 243.7 MB/s
Transfer Rate Average : 209.3 MB/s
Access Time           : 0.2 ms
Burst Rate            : 214.4 MB/s
CPU Usage             : -1.0%

This is fast!  Would this be typical of RAID 0 do you think?

[DannagE]

This is fast!  Would this be typical of RAID 0 do you think?

Its raid0 SSD's. My raid0 raptors were shocking on this pc in comparison, and 100% noisier

[Snokio]

With those results (no curves) It looks like x2 64gb SSD's :g:
 
Edit: beat me to it

[Jabbs]

With those results (no curves) It looks like x2 64gb SSD's :g:
 
Edit: beat me to it

SSD's could be the way to go then

[Snokio]

I was considering SSD's, but the cost (for Intel ones) vs capacity is too high for me at the moment, after doing research, the Samsungs are very quick (topping some 2009 benchmarks) and so with the x2 samsungs I'm buying in will (hopefully) get in and around 200 MB/s with avg read (the most important statistic)
 
http://www.tomshardware.co.uk/charts/2009-3.5-desktop-hard-drive-charts/h2benchw-3.12-Avg-Read-Throughput,1010.html
 
But SSD's are the future!

[delanvital]

HD Tune Pro: Intel   Raid 0 Volume Benchmark

Transfer Rate Average : 209.3 MB/s

Is it really worth RAID'ing them? Mine does 185MB/s average, so why bother buying two, to get 13% more? :g:Or am I missing something?

[DannagE]

These look like the next big thing in SSD's

http://www.anandtech.com/storage/showdoc.aspx?i=3702

[OldBloke]

What's going on here then?

2 x WD Raptor 150GB in raid0

[Snokio]

What's going on here then?
 
2 x WD Raptor 150GB in raid0

 
That seems about right to me, if individually you would get 70-80, thats still good performance, remember the more drives added the higher the performance (across the bus).
 
Been told that it also depends on your stripe size (64k / 128k etc) and the number of platters per disk.