lukeblu
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Transfer Rate and Copy file rate
I have 3 hard drive in same machine, Maxtor 40G, 120G, 160G. I copy a file in 200M from 160G to 120G, and it took only 20 seconds. But if I copy the same file from 160G to 40G, it took 3.5 -4.0 minutes. It is clear that 40G is very slow. 2 months ago, the 40G is not so slow.
I tested it with Sisoftware Sendra and HD Tach. The test is passed. Nothing is wrong. The randon access read rate is 15M/s, and sequential read = 13M/s.
I tried this hard drive in 2 PCs in Win2k/XP, and re-partition it , the same problem happens in 2 PCs.
The 40G still is in warrenty. If it is defective, I can get warrenty. But the test is OK, what is the problem for so slow copying?
I tested it with Sisoftware Sendra and HD Tach. The test is passed. Nothing is wrong. The randon access read rate is 15M/s, and sequential read = 13M/s.
I tried this hard drive in 2 PCs in Win2k/XP, and re-partition it , the same problem happens in 2 PCs.
The 40G still is in warrenty. If it is defective, I can get warrenty. But the test is OK, what is the problem for so slow copying?
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I had said I had re-partition it. So no doubt, the logic drive is empty, no file there. The file copy time all are tested in empty logic drive( 40G in NTFS in Windows 2000). I had used Maxtor's utility to do full low-level format this hard drive and created new partition/logic drive, format it.
The full low-level format took about 6 hours, much longer than my another 30G Maxtor(2 hours). It was very fast to create partition and logic drive. But I failed to format this logic drive 2 time( Error Msg: cannot finish format ). The thid format is done. Then I tried to test it with HD Tach, same result, nothing changes. I tried to copy a 700M file from Primary master(30G Maxtor, just re-formated and installed a new Win2kpro) to my 40G( in secondary master), this copy took about 10mins. But the file copy in 30G from a folder to another folder took only 2 mins.
I tried copy in DOS mode, not Win Mode. 40G is still very slow, similar as in Windows. This hard drive must be abnormal. I tested another Maxtor 40G(fireball) with USB2 and HD2USB adapter. The 700M copy took only 2 mins.
In fact, I am very good at PC trouble-shooting. At my home, I had 5 PCs with 14 HDs(Every PC has 2 or more HDs and 1 or more CD/DVD.The oldest one is PIII 750). Please don't think about all reasons which normal user who doesn't understand computer will happen.
Anyway, thanks
The full low-level format took about 6 hours, much longer than my another 30G Maxtor(2 hours). It was very fast to create partition and logic drive. But I failed to format this logic drive 2 time( Error Msg: cannot finish format ). The thid format is done. Then I tried to test it with HD Tach, same result, nothing changes. I tried to copy a 700M file from Primary master(30G Maxtor, just re-formated and installed a new Win2kpro) to my 40G( in secondary master), this copy took about 10mins. But the file copy in 30G from a folder to another folder took only 2 mins.
I tried copy in DOS mode, not Win Mode. 40G is still very slow, similar as in Windows. This hard drive must be abnormal. I tested another Maxtor 40G(fireball) with USB2 and HD2USB adapter. The 700M copy took only 2 mins.
In fact, I am very good at PC trouble-shooting. At my home, I had 5 PCs with 14 HDs(Every PC has 2 or more HDs and 1 or more CD/DVD.The oldest one is PIII 750). Please don't think about all reasons which normal user who doesn't understand computer will happen.
Anyway, thanks
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Problem is there yet. Although your answer is unhelpful to me because I knaw what you said at least 10 years ago(I was an expert and IC-chip, Assembler language programeer when computer is 286), I still thank you for your comments. You get your points too.
Now I am trying to use Russia PC 3000 to analyze this HD. I hope I can find the reason.
Thank you guys again.
Now I am trying to use Russia PC 3000 to analyze this HD. I hope I can find the reason.
Thank you guys again.
thanx too.
ASKER
And I tried to install the 40G as USB with an external HD2USB adapter. The copy is still very slow ( It took 4 minutes to copy a file in 200M). I compared a 1G HD (very old Maxtor) in this USB adapter. It took 55 seconds to copy a file in 200M.
It is really big difference between my 40G HD and other drives. In my old Pentium 2 system with 10G Maxtor and 4G WD ( working at Mode 2 and ATA66), it take only 50 seconds to copy a file in 200M.
I found a strange test result of HD Tach. You know, HD Tach can show you a test result curve in your sequential test from 0G to 40G. Normally this curve is smooth, without big difference between Max. read speed and Min. read speed. I tried it in 6 hard drives I had except the 40G. The curve always almost smooth, but slow down little from 0G to Max. capacity. But test my 40G Maxtor, it always has big difference between Max. and Min read speed. Normally min is about 0.5M/s, and the Max. is about 25M/s. So the curve never be smooth, like a sharp saw. In range of 0G to 40G test, this MAx/Min-wave will be repeated about 12-15 times. The average read speed still is in 12-13M/s.
So I think something wrong in my 40G HD.