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October 29th, 2008 23:00
Help concerning file copy speed between internal hard drives
Hey all. Looking for some input. I have a XPS 410 with two internal hard drives. It came with a 320GB (I think Samsung) and I added a Seagate 750GB about a year ago. Last night I was copying all my digital photos over to the new drive as a backup precaution. I have about 19GB of photos. It took about 45 minutes to an hour to copy everything over and the speed displayed by vista was around 13.7 KB/sec. I also backup up the same photos to a 120GB western digital external hard drive hooked up via USB cable and it seems like it took about the same amount of time, perhaps a bit longer. I left and went to bed, but the transfer speed seemed just as slow.
Both internal drives are SATA 3 GB/s. I thought I would see much quicker transfer speeds. Does 45min to 1 hour seem reasonable to copy 19GB or is this super slow? If slow, what could possibly be going on to cause it? Any suggestions on how to figure out whether either of the drives is bad. They seem to operate fine. I just have no idea how long it should take to copy this much information.
Thanks!
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PETER345
5.8K Posts
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October 30th, 2008 01:00
It is a bit on the slow side.
I get: 19 GB/(45*60)*1024 = 7.2 MB/s= 58 Mb/s (for 45 minutes)
Generally copying a few large files is faster than many small files, so this might be reasonable.
The 3Gb/s is just the transfer speed of the serial link. The performance is limited by other factors such as drive speed and seek times.
Peter