Post HD Tach screenies here!

[K404]

Is anyone in a position to test their arrays in a RAID1 setup, especially for Windows boot times and PCM05 performance?

Would be grateful

Cheers!

(Once i`m back up an running i`ll try to add benches of my 3 Spinpoints in RAID1)

 

[Thor]

When I get around to sorting out my comp I'll do some benches to test the difference between my 2 raptors (raid 0) and my u320 15k scsi.

 

[K404]

You`ll LOVE the file transfer times between the RAID and the SCSI if they`re all in at once

 

[Thor]

They will be

 

[Arctic Ice]

Here's my effort with 2x Hitachi Deskstars 250Gb

 

[Blindfitter]

Heres mine kenny, a pair of 74 raptors, 1 with 8mb cache and 1 with 16mb, seems to work ok

 

[K404]

Not that great huh? Lets try my RAID!



So.....who needs raptors?

 

[maverik-sg1]

Which drives are those kenny? The spinpoints that you are selling or a ne investment?

 

[K404]

Those are the Spinpoints i`m selling yup

 

[K404]

I managed to find an HDTach online of the disk(s) I have my eye on...check out the inner zone access, then imagine that in a RAID



Thanks to xrunx for posting that bench and "allowing" me to copy it!

 

[K404]

Single Raptor 150 X



2x Raptor X 150, RAID 0 128KB.

Performance tweak: The needles start at the outer zones of the drives, and the HDTach shows that performance increases as the needles move in. Create a dummy RAID of around 30GB before making the "Real" RAID partition and performance should be better. Mavs pics show a performance peak in the middle of the graph, so making a massive dummy RAID isnt the answer

 

[K404]

Worth every penny

(3x Samsung Spinpoint T166 disks in a RAID0, 128KB stripes)

 

[maverik-sg1]

2 Drives in Raid 0 totalling 55GB (assume 60GB unformatted so 20GB each)? Impressive speed but what are they exactly and what are they worth in £'s?

 

[K404]

Its a 3-way They're Samsung Spinpoint HD160HJ disks. Because performance drops in the outer zones, I've masked off a small stripe to keep numbers and grouping good These are purely for benching- I hate setting up RAID on 24/7 disks because its harder to switch mobos.

In real money, the 3 disks were £112 delivered

 

[maverik-sg1]

A 3-way set-up = nice, like my hitachi's

So in reality, formatting only a small partition on the drive (the inner part of the platter) improving the performance by choosing the fastest spinning sectors and using 128kb stripes.

Good thinking batman, is 20GB the optimum? assuming 160GB capacity and two 80gb platters, I would of thought that 30-40 GB would offer similar performance.

I ask these things as I know you are very thorough in your quest to optimise each part of a benchmarking system.

(sound of feet hitting the ground as Mav runs to find platter size of his deskstar 7k250 drives)

 

[K404]

The disks are single platters at 166GB each- joint highest platter density without using perpendicular technology (with Seagate.) For a single partition, 20GB is fine. Mine is at 55GB coz I have 3 Bench installations at 15GB a shot

 

[K404]

been working the drivers all afternoon but im finally getting somewhere. I have another problem creeping up now- some of ya should be able to figure it out from the graph

 

[maverik-sg1]

Looks to me to be a flash drive or combi flash drive?

 

[OV3RCLOCK3R]

Single 250GB Seagate 7200.10

 

[Mr Dizzy]

2x 150 Raptors on ICH9R Raid Contoller