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Thread ID: 50078 2004-10-09 23:52:00 NTFS on external hd heni72847 (1166) Press F1
Post ID Timestamp Content User
279691 2004-10-19 02:31:00 looked up some stuff about the hd that's inside the case
www.fel.fujitsu.com

Power requirement Spin up 0.90A maximum
...er.. not good
it doesn't mention normal power usage though...
heni72847 (1166)
279692 2004-10-19 02:38:00 > It might help if this hdd is bigger than 32gb which
> FAT32 cant go beyond.

That's simply wrong.

Lo.
Lohsing (219)
279693 2004-10-19 02:46:00 > it doesn't mention normal power usage though...

Yes it does.

2.1 watts typical read/write

Thats 2.1 watts / 5 v = 0.42 amps (420 mA)

Just inside the 500 mA USB capabilities, but that is "typical", whereas the 900 mA is "maximum"

It will vary from about 400 and up in operation I would estimate. Hence why it "disconnects" at times.

My case has a socket for an auxiliary 5v power source.
godfather (25)
279694 2004-10-19 02:49:00 96mA is what it says from the power tab in root hubs properties inside hardware management

is that just the amps required for it to be spinning?
so when read/write it needs more...
heni72847 (1166)
279695 2004-10-19 03:56:00 Not quite right, GF . :-) It's 500 mA per port, according to the standard . There are problems with laptops which might have only one USB socket with a total of 500 mA (or the naughty manufacturers who don't supply 500 mA) . So the two USB connectors will give a total of 1A, which should work .

If not, perhaps what he needs is a POS machine with USB PlusPower, which provides 5V at 6A, 12V at 6A and 24V at 6A . IBM, NCR and FCI/Berg mean business with that .
Graham L (2)
279696 2004-10-19 04:31:00 Yes, my bad .

Many laptops do only have one port, as you say .

Fitting a port powered hub would still limit it to 500 mA total, but otherwise it should be 500 mA per port . My unit will not actually work reliably with the PC mounted port, but will if I use the external powered hub . Perhaps the motherboard makers are economical with their 500 mA?

And to answer the last question above, the 96 mA may well be the quescent drain, but I would not put a lot of faith in the accuracy of the 96 mA?
godfather (25)
279697 2004-10-19 05:18:00 Fat 32 can go to 2TB (TerraBytes) but is limited by Microsoft. Good comparison FAT V NTFS here (www.ntfs.com)

It gets so damn confusing sometimes.
Pheonix (280)
279698 2004-10-19 05:49:00 > Fat 32 can go to 2TB (TerraBytes) but is limited by
> Microsoft. Good comparison FAT V NTFS
> here (www.ntfs.com)
>
> It gets so damn confusing sometimes.


I had consider voicing this oppinion but the poster seems/seemed commited to the NTFS M/S default trap.

If there is a remote possability in any soho system, that you may want any compatability with other O/S F/S, N.T.F.S. is often not the best choice.

Among other things it causes/can cause large problems with the many of the simple C/D boot O/S rescue systems.

D.
drb1 (4492)
279699 2004-10-19 05:55:00 um.. the Fault Tolerance ... would that help??

the hd is only ext. so.. hopefully don't need to do system recoveries on it...
heni72847 (1166)
279700 2004-10-19 06:45:00 Heni,

As it is external, you may be more inclined to take it some where .

So this could be more of an issue .

This is why sticks mostly use fat, all-though they can be reformatted .

D .
drb1 (4492)
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