Rosher Consulting

Software Consulting and Development Services

NAS - Thecus N4100+

4100 Running a server 24/7 can become an expensive business especially when you're using an old power hungry Pentium 4 processor and you've got a lot of hard drives, which is why around December 07 I decided to get myself a NAS drive. I figured I could put all of my media files on the NAS and then keep the existing server in standby and have it wake up and shut down automatically to record TV.

Before I started looking for a NAS I drew up a list of requirements that I wanted to have, in order of priority:

  • At least 4 drive bays
  • BitTorrent client
  • iTunes server
  • UPNP compatible
  • FTP Server

I wanted 4 drive bays because it would allow me to start off with one drive and then add more as required, I wanted the BitTorrent client because I download some TV episodes and didn't want to have the server on for this, the iTunes server was required so that I didn't have to maintain separate iTunes libraries on various PC's, UPNP was more of a future requirement as more and more devices use this to discover content on the network and finally the FTP server as I occasionally upload files to the server.

Finding a 4 bay NAS drive wasn't a problem, there were plenty on the market, but finding one with the features I required was a bit of a problem as most 4 bay's were targeted at enterprise users, ones with the features I required had only 2 bays and I wasn't willing to compromise.

I eventually came across the Thecus N4100+ during my search that had everything I wanted and also had some really good reviews, most notably the reviewers pointed out the excellent features and the data transfer performance, which was something I was also interested in given my recent experiences with gigabit networking.

I did a bit of shopping around and eventually picked one up for £330 from Ultimate Storage, as I already said I was thinking of starting off with one hard drive and then adding more as time went on, but I've got no willpower when it comes to gadgets and when I saw the price of 500gig drives I ended up ordering 4 of them to give me 2 terabytes of storage!

When everything turned up I installed the drives and proceeded to get the NAS configured, which was reasonably straightforward once I'd read the manual of course. I decided to go with a JBOD setup rather than configuring a RAID array as I wanted to utilise all the available space and I wasn't bothered about backing anything up. Waiting for the NAS to configure the drives took about an hour, not sure why, but it would appear this isn't uncommon, in fact I've heard reports of configuring RAID arrays taking days, which I think is a combination of most cheap NAS drives using a slow CPU and having a software raid implementation, but anyway it got there in the end.

I then started to copy my media off of the server and on to the NAS, which is when I thought that perhaps Windows had a problem with its file transfer calculation time routine as it was way off the charts, heck, this NAS is supposed to be fast! I then busted out FastCopy to see what transfer rates I was getting and was disappointed to see that it was only around 5meg, doing some research on the net made me even more despondent and made me realise I should have done more of my usual research before buying the NAS drive as I wasn't the only one experiencing slow transfer rates.

I persevered for a while and tried all the usual tricks such as jumbo frames and any other suggestion I could come across but the best transfer rate I ever got was around 8meg, which when transferring gigs and gigs of files is going to take a long, longggg time!

Ultimately the problem with the NAS is that it's underpowered, even though it's got a gigabit Ethernet port and utilises SATA hard disks the CPU just can't keep up with high transfer rates, when I was doing my testing the CPU was always pegged at 100%, so no matter what configuration changes I made I was never going to improve the transfer rates.

I decided to cut my losses on the drive and send it back, the only problem was that I'd bought it just before Christmas and being Christmas I'd been a bit lax, Ultimate Storage don't exactly have a long return period either, so combined that meant that I was over the limit and wouldn't get a full refund. I couldn't accept the restocking fee, so I figured I'd probably eBay it or something... in the mean time I had to decide what to do with the four 500gig drives...

However, that and what eventually happened to the NAS drive is all a story for another time.

Comments are closed