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#1
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Great storage method, is it available in UK???
OK so I was looking for a descent storage method for my laptop and saw a few
things that I should get like a PCMCIA card that changes the very slow cardbus to a super fast twin serial ata port, marvelous, and its available in the UK (albeit at a rip off price compared to states £40 here and $25 there) I then saw this combo hard drive thingy made by addonics which would work very well with the serial ata card and also a reaonable price and would allow me to insert any IDE hard drive (I was thinking of the Maxtor II 300GB for about £250) into this thing and have a very fast transfer rate between my laptop and the drive. Sounds great hey? well the problem I'm having is I can't find a similar product in the UK, the only external hard drives I can find are complete units using only the slow usb2 and firewire and the even slower pcmcia cardbus, these types of speeds aren't acceptable for a working hard drive and I really would like the combo hard disk case as it has an external power supply for the hard drives, also you have the flexability of interchanging the IDE hard drives in the unit which is a very cheap way of doing things, but what with it being a product from the states it doesn't have the correct power supply and I don't really want to order anything from the states anyway, I've had some bad experiences with ordering from there before. Anyway, if anyone has any suggestions or some links to websites that might have this combo drive thing adapted for UK use I would be very very gratefull. Here is the link to the american product http://www.addonics.com/products/ext...d/combo_hd.asp Tanks in advance Mark |
#2
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"Mark" wrote in message
... OK so I was looking for a descent storage method for my laptop and saw a few things that I should get like a PCMCIA card that changes the very slow cardbus to a super fast twin serial ata port, marvelous, and its available in the UK snip I got an external USB2.0 box for notebook hard drives that is only an inch longer that the drive itself, powered from two USB ports so no external power required. With a Hitachi 40GB 5400 rpm drive the actual file transfer rate is just over 17MB/s which is the limit of the hard drive and not the interface. The box is labelled Mentor and cost 10 quid. They also make a 3.5" version that does use external PSU. USB2.0 is faster than any hard drive's sustained transfer rate so a properly designed interface is not going to impede on drive's performance. http://www.bona-uk.com/ click "Into web site", PC products, Enclosure |
#3
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On Thu, 11 Mar 2004 12:52:36 -0000, "Alien Zord"
wrote: I got an external USB2.0 box for notebook hard drives that is only an inch longer that the drive itself, powered from two USB ports so no external power required. With a Hitachi 40GB 5400 rpm drive the actual file transfer rate is just over 17MB/s which is the limit of the hard drive and not the interface. The box is labelled Mentor and cost 10 quid. They also make a 3.5" version that does use external PSU. USB2.0 is faster than any hard drive's sustained transfer rate so a properly designed interface is not going to impede on drive's performance. http://www.bona-uk.com/ click "Into web site", PC products, Enclosure USB2 isn't faster than "any" hard drive's sustained transfer rate. It practice it'll never go much faster than 20MB/s even with a drive capable of significantly faster. I"m not necessary claiming the Hitachi drive is capable of faster than 17MB/s though, I don't know about that particular drive. |
#4
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"kony" wrote in message
news On Thu, 11 Mar 2004 12:52:36 -0000, "Alien Zord" wrote: I got an external USB2.0 box for notebook hard drives that is only an inch longer that the drive itself, powered from two USB ports so no external power required. With a Hitachi 40GB 5400 rpm drive the actual file transfer rate is just over 17MB/s which is the limit of the hard drive and not the interface. The box is labelled Mentor and cost 10 quid. They also make a 3.5" version that does use external PSU. USB2.0 is faster than any hard drive's sustained transfer rate so a properly designed interface is not going to impede on drive's performance. http://www.bona-uk.com/ click "Into web site", PC products, Enclosure USB2 isn't faster than "any" hard drive's sustained transfer rate. It practice it'll never go much faster than 20MB/s even with a drive capable of significantly faster. I"m not necessary claiming the Hitachi drive is capable of faster than 17MB/s though, I don't know about that particular drive. http://www.usb.org/developers/docs Document: USB revision 2.0 specification, page 83, High-speed bulk transaction mode of operation: 53.248 MB/s net (60MB/s raw, i.e. 480Mb/s)). The fastest PATA hard drive I ever tested (in real world mode under NTFS, not brute force raw segment read and write) achieved 49MB/s on outer tracks and 32MB/s on inner tracks. Most USB2.0 devices and drivers operate in high-speed interrupt or isosynchronous mode at 24MB/s. However, bulk transaction mode is available to them that's why I mentioned "properly designed interface". |
#5
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On Sun, 14 Mar 2004 10:02:42 -0000, "Alien Zord"
wrote: USB2 isn't faster than "any" hard drive's sustained transfer rate. It practice it'll never go much faster than 20MB/s even with a drive capable of significantly faster. I"m not necessary claiming the Hitachi drive is capable of faster than 17MB/s though, I don't know about that particular drive. http://www.usb.org/developers/docs Document: USB revision 2.0 specification, page 83, High-speed bulk transaction mode of operation: 53.248 MB/s net (60MB/s raw, i.e. 480Mb/s)). Fair enough, I should've written "contemporary USB2 devices", not "USB2". On the other hand, can we really claim USB2 is faster than a hard drive's sustained transfer rate if we only have a theoretical example, that for it to actually be faster we'd have to have actual devices with a real HDD, not being bottlenecked by the enclosure's USB2 interface? Wouldn't it be more appropriate to write that it has the potential to be faster, but that currently it isn't? |
#6
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"kony" wrote in message
... On Sun, 14 Mar 2004 10:02:42 -0000, "Alien Zord" wrote: http://www.usb.org/developers/docs Document: USB revision 2.0 specification, page 83, High-speed bulk transaction mode of operation: 53.248 MB/s net (60MB/s raw, i.e. 480Mb/s)). Fair enough, I should've written "contemporary USB2 devices", not "USB2". On the other hand, can we really claim USB2 is faster than a hard drive's sustained transfer rate if we only have a theoretical example, that for it to actually be faster we'd have to have actual devices with a real HDD, not being bottlenecked by the enclosure's USB2 interface? Wouldn't it be more appropriate to write that it has the potential to be faster, but that currently it isn't? I'm expecting some newly designed 3.5" external USB2.0 HDD enclosures shortly so will do a real world test then. |
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