[anatmob]

I've just sold my ICY BOX IB-4220-B on ebay and have had a request for return as the buyer is saying although this says gigabit dual raid nas he's only getting 150mbps on testing, nowhere near the 1000mbps a gigabit NAS is supposed to offer.

any idea why or what could be causing it or how I could test it when I get it back. I've had virtually no experience with NAS and this was only setup for a shortwhile before I reboxed it.

by 150mbps does he mean 150MB or 18MB

If thats transferring 150MB thats one heck of a connection considering a Gb Lan tops out at 125MB theoretically

[avaicavum]

I've just sold my ICY BOX IB-4220-B on ebay and have had a request for return as the buyer is saying although this says gigabit dual raid nas he's only getting 150mbps on testing, nowhere near the 1000mbps a gigabit NAS is supposed to offer.

any idea why or what could be causing it or how I could test it when I get it back. I've had virtually no experience with NAS and this was only setup for a shortwhile before I reboxed it.

[streMunford]

his controller/router has the issue ?

it can oly go as fast as the hardware its plugged into

[Hodstcopter]

Yes, the device will only be as fast as the slowest link in the chain. It could be the drive's in the NAS, router/switch, NIC's in other PC's, HDD's in other PC's, etc.

1Gb/s is the max theoretical speed. You will rarely get even close to that with consumer grade hardware across the board. The Icy box's probably don't have much for RAM/cache either, so that could be another bottleneck.

[RooldpalApata]

More than likely he just doesn't know what he's doing and there is nothing wrong with the device.

Every time I've heard of someone saying this it's either that they don't understand the difference between megabits and megabytes or don't realize that theoretical and actual speeds are going to be quite different.

Chances are he'll be buying and returning numerous NAS devices before he realizes this.

[avaicavum]

He said it's on an all gigabit network through a Gigabit switch and he's gonna do more tests later but it looks like the NAS has a faulty CPU ?

[Poll Pitt]

He said it's on an all gigabit network through a Gigabit switch and he's gonna do more tests later but it looks like the NAS has a faulty CPU ?

I would ask him how he is running the tests, also get him to compare the speed of copying data to another PC on the network (ideally using the same network cable the NAS is using).

[avaicavum]

I would ask him how he is running the tests, also get him to compare the speed of copying data to another PC on the network (ideally using the same network cable the NAS is using).

Not worth risking the bad feedback, 750+ 100% positive, I'll just refund him and offer it to the next highest bidder or relist it.

[AsmViktor]

Not worth risking the bad feedback, 750+ 100% positive, I'll just refund him and offer it to the next highest bidder or relist it.

Problem is, he still may neg you even with a refund...

[artenotreah]

Sounds like a perfectly reasonable sustained rate. Is he copying one large file or numerous smaller ones because then HDD seek times and network latency issues will eat into the theoretical transfer rate as well. Besides that, you're not responsible for doing his research or the performance of the product and this is clearly not a malfunction.

[Lymnempomma]

I have no first hand experience of this product, but I have used similar in work and at home. In the end, the only decent fast solution I have found is to use a computer for a network file server to get the best performance.

I now get 50MB/sec+ transfer over gigabit without using jumbo frames.

I'd suggest the icy box just isn't up to the task of high speed storage.

This review also indicates similar.

http://www.ocia.net/reviews/icybox4220/page5.shtml

Sandra reports an average of around 7.5MB/s for the NAS 4220. That's a little on the low side when you consider that the theoretical maximum throughput on a 10/100 link is 12.5MB/s (100Mb/s). I also timed moving some files manually to and from the box. In these tests I used a single 500MB ISO for the large file test and a folder of 400+ pictures totaling 500MB for the small file test. As you can see, average read/write times were consistent with the SiSoft file system benchmark results.