Fast hard drives
How fast is everyone's hard drive? I just got mine running really fast(1.65 GB copy in 35 seconds. =0) using Raid 0 on 2 fast 250 GB hard drives. So I am really happy copying my files around just to see how fast it is. How fast is everyone else's hard drives? On the Windows Vista rating thing, I got a 5.9.
Tried a 3.2 GB file, and scaling the copy time linearly to correspond to your "reference" file size;
If your disks are not that old, it seems like you don't gain any copy performance from using RAID.
- 40 seconds on a Western Digital Raptor. This is a 10k RPM disk; really quick and responsive but not that high raw throughput. And it's a bit old also. Still compares OK to your setup.
- 35 seconds on a Seagate Barracuda.
- 28 second from the Barracuda to the Raptor.
If your disks are not that old, it seems like you don't gain any copy performance from using RAID.
Compare that to copying a 1.65GB file from one disk to another (i.e. no RAID). I think you'd be surprised...
Quote:
I just got mine running really fast(1.65 GB copy in 35 seconds. =0)
This is very poor performance. I get almost double that on a sequential copy between two Seagates (ST3500320AS) without any RAID at all. Check your configuration and AHCI/RAID connections and drivers.
Really? My friend has a 500 GB single hard drive and it runs a lot slower(like 10 minutes!). Also, the rest of my computer is mediocre(except the memory), so that may slow it down. My old computer took 2 hours to copy that. It was a step I repeated many times with the same files, and compared the speed. It might also have something to do with that I was copying a folder with a lot of files, actually a game, which might slow it down looking for files to copy.
I get a Vista score of 5.8 on my non-RAID ST250820AS (Seagate Barracuda SATA2 8MB 7200RPM) drive.
Quote:Original post by JedimaceCopying a file on one disk involves a lot more head seeking back and forth than between two drives.
Really? My friend has a 500 GB single hard drive and it runs a lot slower(like 10 minutes!)
Raptors normally get a 5.9 in Vista rating from what I have seen. At least I know my 150GB and 75GB ones do. They are noticably faster than most normal 7,500 except for the newer 1 and 1.5TB drives.
The old 15,000rpm scsi cheetah drive I used to use still leaves them in the dust though but it's only like 16GB so needless to say I don't even use it anymore!
The possiblity of data loss with Raid 0 doesn't seem to outweight the slight performance increase IMO. Not to mention alot of recovery data tools don't work with raid drives correctly and it's a bigger pain doing a raid XP or Vista install,etc so I basically gave up on RAID along time ago for most of my machines.
The old 15,000rpm scsi cheetah drive I used to use still leaves them in the dust though but it's only like 16GB so needless to say I don't even use it anymore!
The possiblity of data loss with Raid 0 doesn't seem to outweight the slight performance increase IMO. Not to mention alot of recovery data tools don't work with raid drives correctly and it's a bigger pain doing a raid XP or Vista install,etc so I basically gave up on RAID along time ago for most of my machines.
Vista gives you a 5.9 if the drive does 30 MB/s or more it seems, i've yet to see any computer i've put together get anything less for the drive rating, even the slower ones.
The original posters speed was an average of 48 MB/s when calculated, if anyone was wondering the actual speed. Thats 1.65 Gigs x 1024= 1689 MB/35 seconds = 48.2 MB/s. Which actually seems extremely slow for a raid 0. To the op, whats your strip size?
Personally, my raid 10 does 164 MB/s peak with an average of 140 MB/s, with a seek of around 4 ms (total access time 8.2 ms).
Edit: You may also want to checkout my sticky on raids.
The original posters speed was an average of 48 MB/s when calculated, if anyone was wondering the actual speed. Thats 1.65 Gigs x 1024= 1689 MB/35 seconds = 48.2 MB/s. Which actually seems extremely slow for a raid 0. To the op, whats your strip size?
Personally, my raid 10 does 164 MB/s peak with an average of 140 MB/s, with a seek of around 4 ms (total access time 8.2 ms).
Edit: You may also want to checkout my sticky on raids.
Quote:Original post by daviangel
Raptors normally get a 5.9 in Vista rating from what I have seen. At least I know my 150GB and 75GB ones do. They are noticably faster than most normal 7,500 except for the newer 1 and 1.5TB drives.
Don't just consider max throughput, access times are quite important.
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