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| Thread ID: 100090 | 2009-05-26 03:00:00 | Confused about HD transfer speeds | oldun (8465) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 776880 | 2009-05-26 03:00:00 | I have a system with the following specs: CPU=Intel dual core 2.8Ghz, 2 Gig Ram [ typically 1.4 Gigs available, 2 HD installed both barracuda 7200rpm 40 G each. IDE one set as master the other as slave. yesterday I purchased an EXTernal drive: A western digital 160 GB 5000rpm USB2, formatted as NTFS. I ran the "HD" TUNE2.00 program, This showed that the WD has an access time 16Ms. Burst rate of 22.5MB/sec an Average transfer rate of 22.2 MB/s. Whereas the two main internal drives have an access time of 14.9Ms/sec. a burst rate of 50.3 MB/sec, and an average transfer rate of approx 35.4 MB/sec. Now I guess that is what one would expect eh? NO NO NO!!!!!! when I did a Image of the main HD to the External drive [ I routinely do this once a week to the 2nd hard drive] lo and behold the time to do this using the external drive took less that 1/3rd of normal [final file size about 4.9GB] Can any enlighten me how come a serial connection [USB] is a heck of a lot faster that of the higher speed paraell connection between drives, what have I missed? Many thanks.:blush: |
oldun (8465) | ||
| 776881 | 2009-05-26 03:10:00 | Both the internal drives are on the same IDE channel, which will be part of the difference. Are the numbers you quote for your internal drives what HD Tune reported for BOTH, or what the manufacturer claims? | inphinity (7274) | ||
| 776882 | 2009-05-26 06:01:00 | Can any enlighten me how come a serial connection [USB] is a heck of a lot faster that of the higher speed paraell connection between drives, what have I missed? The drive itself is faster which would have something to do with it. And the program would have been measuring the USB. |
pctek (84) | ||
| 776883 | 2009-05-27 00:14:00 | Yes, reading and writing on the same IDE channel is slow, this was half the reason why in the old days if you had a cd writing and HDD on the same IDE, you would put the writing as the master so it had priorty for writing... | SolMiester (139) | ||
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