Rosewill RX82-U HDD Enclosure

[t_ski]

The Rosewill RX82-U is a USB enclosure for SATA hard disk drives featuring two easy-to-swap trays. Running in JBOD mode, each drive gets seen as its own self, so the user will see two drives if two drives are installed. More trays can be purchased and drives can be hot-swapped as needed.

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[mcloughj]

It's a real shame that it doesn't support eSata! Opportunity Missed Rosewill!

 

[3870x2]

I know that E-sata is 3.0 gb/s is nice, but the hard drives wont be able to take advantage of it in most cases, because USB 2.0 is 480 MB/s, find me a hard drive that can take advantage of that.

 

[W1zzard]

usb is 480 Mb = MegaBIT = 60 MBytes/s in theory.. realistic is between 30 and 40 MB

 

[t_ski]

@3870x2 - Remember, Gb/s and Mb/s refer to bits, not bytes. In reality, USB 2.0 typically gets between 30-34 megabytes per second reads. Most hard drives today will do 50-85 megabytes per second reads. If you look at the performance page from the Thermaltake BlacX review, the 5400 RPM Seagate Momentus HDD Fell below 30 megabytes per second about 2/3 of the way through the drive. Most other drives will be limited by the USB through-put.

@ mcloughj - They do have a dual bay eSATA drive coming out soon:

http://www.rosewill.com/product/product.aspx?productId=1121

Different format, but the drives are still removeable.

 

[kylew]

This looks very nice, are they limited to 500GB for each drive? or can you put what you want in? I hope they do a version of this one with eSATA, that's what'll make me buy one. I'll be building a server soon, and it'd be nice to have something external on eSATA that I can take out when I go over to friend's places and such.

 

[t_ski]

One of the comments on Newegg said they called Rosewill and confirmed that individual drives of up to 1 TB in size can be used. Any size up to 1TB will work, and both drives do not need to be the same size, make or model.

 

[3870x2]

@3870x2 - Remember, Gb/s and Mb/s refer to bits, not bytes. In reality, USB 2.0 typically gets between 30-34 megabytes per second reads. Most hard drives today will do 50-85 megabytes per second reads. If you look at the performance page from the Thermaltake BlacX review, the 5400 RPM Seagate Momentus HDD Fell below 30 megabytes per second about 2/3 of the way through the drive. Most other drives will be limited by the USB through-put.

Hilarious: I work as a computer technician for the US Special Forces, and I'm Typing this from IRAQ. I co-maintain a network with 400+/- computers and 20 switches. Thank you for the obvious.
I don't know what USB you've been using but the 2.0 on my dell workstation has a constant read of 60-70 MB/s.

 

[W1zzard]

Hilarious: I work as a computer technician for the US Special Forces, and I'm Typing this from IRAQ. I co-maintain a network with 400+/- computers and 20 switches. Thank you for the obvious.
I don't know what USB you've been using but the 2.0 on my dell workstation has a constant read of 60-70 MB/s.

please post a hdtach/atto benchmark

 

[t_ski]

please post a hdtach/atto benchmark

Agreed. I have never seen anything higher than 34 MB/s myself, so I would also be interested in what hardware you're using to get that result.

 

[3870x2]

I was looking at our FIREWIRE drives, which even then dont reach 60-70 MB/s unless they are directly attached to our server. I was wrong about that, but even my hard drive wont reach that high (second image), it would be higher, albeit not by much, if it were a reg 3.5 inch.

 

[mdm-adph]

Can't little mistakes like that in your type of job lead to the loss of lives?

 

[3870x2]

Can't little mistakes like that in your type of job lead to the loss of lives?

No, but petty ADD kids like yourself cause other people their lives out here all the time. I'm out here fighting for your right to insult me like that, which was completely unnecessary. Last night, we had a casualty out in the field, a guy i knew from a battallion. He fought for those words, and this is what you said with them.