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Author ATA 5
Craig6682
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21st Feb 04 at 21:48   View User's Profile U2U Member Reply With Quote
Can anyone tell me what Bus this is - i.e. 100 etc
Greg_M
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21st Feb 04 at 21:50   View User's Profile U2U Member Reply With Quote
Craig6682
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21st Feb 04 at 21:52   View User's Profile U2U Member Reply With Quote
66 it is !!!

Greg_M
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21st Feb 04 at 21:54   View User's Profile U2U Member Reply With Quote
wtf marmalde shoes walk fas as houses beans grass
Craig6682
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21st Feb 04 at 21:56   View User's Profile U2U Member Reply With Quote
Got a removable hard drive. It's in a 100 case and wanted to know the drive speed.
Tim
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21st Feb 04 at 22:09   View Garage View User's Profile U2U Member Reply With Quote
Mode 5 is 100mb/s (66 is mode 4)
DAYZEE
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21st Feb 04 at 22:09   View User's Profile U2U Member Reply With Quote
Not usually called ATA5, but yes its UDMA 66.
AdiSRI
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21st Feb 04 at 22:09   View User's Profile U2U Member Reply With Quote
Common operating modes -

PIO Mode 2
PIO Mode 4
Ultra DMA 2 – ATA/16
Ultra DMA 3 – ATA/33
Ultra DMA 4 – ATA/66
Ultra DMA 5 – ATA/100
Ultra DMA 6 – ATA/133
Tim
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21st Feb 04 at 22:10   View Garage View User's Profile U2U Member Reply With Quote
The more confusing point is ATA/ATAPI-5 is 66mb... UDMA Mode 5 is 100mb/s...
DAYZEE
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21st Feb 04 at 22:12   View User's Profile U2U Member Reply With Quote
Buthe doesn't say its UDMA 5, he says ATA 5 which is 66mb/s
Craig6682
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21st Feb 04 at 22:16   View User's Profile U2U Member Reply With Quote
Acording to HITACHI the drive is 66 (drive model number: DK23BA-20). USB 2.0 will only transfer 60MB a second anyway if i've done the Maths right

Want it to transfer files between my 2 computers and my laptop. Also be handy for uni and work. Just pu 8 gig on it and took about 7.5 mins
Craig6682
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21st Feb 04 at 22:17   View User's Profile U2U Member Reply With Quote
ATA-5 !!!
AdiSRI
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21st Feb 04 at 22:18   View User's Profile U2U Member Reply With Quote
Tim its even more complex than that!

ATA5 has 5 different modes ranging from 16.6 to 66 Mb/sec.

ATA-5 0 16.6
ATA-5 1 25.0
ATA-5 (ATA-33) 2 33.3
ATA-5 3 44.4
ATA-5 (ATA-66) 4 66.6

http://www.buildorbuy.org/atapi.html
Craig6682
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21st Feb 04 at 22:19   View User's Profile U2U Member Reply With Quote
Now i am confused I think it's 66. I'm 99.9% sure
Tim
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21st Feb 04 at 22:20   View Garage View User's Profile U2U Member Reply With Quote
But the drive speed is measured in Mbits... USB 2 is 480Mbits/sec...
AdiSRI
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21st Feb 04 at 22:20   View User's Profile U2U Member Reply With Quote
It is confusing LOL!
Tim
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21st Feb 04 at 22:21   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by AdiSRI
Tim its even more complex than that!

ATA5 has 5 different modes ranging from 16.6 to 66 Mb/sec.

ATA-5 0 16.6
ATA-5 1 25.0
ATA-5 (ATA-33) 2 33.3
ATA-5 3 44.4
ATA-5 (ATA-66) 4 66.6

http://www.buildorbuy.org/atapi.html


Damn standards...
Craig6682
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21st Feb 04 at 22:21   View User's Profile U2U Member Reply With Quote
8 Bits to a Byte. Therefore 480 / 8 = 60. 60MBs a second
AdiSRI
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21st Feb 04 at 22:22   View User's Profile U2U Member Reply With Quote
Yeah all the ATA numbered specs have a few different speeds depending on DMA mode. Ah well.
DAYZEE
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21st Feb 04 at 22:25   View User's Profile U2U Member Reply With Quote
So basicly, I'm right?

[Edited on 21-02-2004 by DAYZEE]
Tim
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21st Feb 04 at 22:25   View Garage View User's Profile U2U Member Reply With Quote
God you can tell the effects of last night's alcohol.... I'm chatting shit...
Craig6682
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21st Feb 04 at 22:26   View User's Profile U2U Member Reply With Quote
Tim, just go out again tonight to recover
Tim
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21st Feb 04 at 22:26   View Garage View User's Profile U2U Member Reply With Quote
2 wrongs make a right and all that....
Craig6682
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21st Feb 04 at 22:27   View User's Profile U2U Member Reply With Quote
Craig6682
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21st Feb 04 at 22:29   View User's Profile U2U Member Reply With Quote
I'm not even gonna work out why it's only 4000 RPM


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