eSATA External Storage Drive Reviewed
Tom's Hardware has a practical look at an eSATA drive offering from Taiwanese storage firm Thecus. From the article: "Thecus' N2050 is one of the first external twin-drive RAID boxes that uses eSATA. As expected, its performance was far better than what USB 2.0 offers. The end result is impressive. The date transfer rate of 30 MB/s that USB 2.0 offers does indeed pale in comparison to 100 MB/s for eSATA, while the WD1500 drives are capable of delivering even better performance in RAID 0. It is also good to see that Thecus did not throw the USB 2.0 interface away, because it is a nice backup interface whenyou want to use the device with other computers via USB 2.0."
"Most users do one of two things when their PC runs out of hard disk space: they either add an additional drive or rely on external storage with a USB 2.0 or Firewire connection. However, both options have their disadvantages, since installing a new drive can be a cumbersome process, while external hard drives do not offer the same level of performance as that of directly attached Serial ATA (SATA) or UltraATA."
And why does the type of home user who shuns opening his or her case need mind-blowing performance? I just don't see who this product is for. There are already sollutions available for those concerned with either performance or ease-of-install.
"A REAL computer has ONE speed and the only powersaving it permits is when you pull the power leads out of the back!"
Most importantly, however, during normal usage, most idle time to due hard drive latency isn't spent waiting for the hard drive to transfer the data off the platters, but waiting for the head arm to seek to the right cylinder. Seek time ain't going to be reduced just by switching to another bus interface.
eSATA is cute and all, but nothing's ever stopped me from routing regular SATA cables out the back of the case, to a nice external hot-swap drive tower. Many higher-end motherboards even come with a little bracket for external SATA ports. While I understand that eSATA is somewhat improved for signal integrity and ease of use (grippy connectors), it doesn't seem like such a big deal to me. I haven't seen a single motherboard with eSATA yet, though some "platinum edition" boards do have a true SATA jack on the backplane. If you want both simplicity and speed. For idiot-proof simplicity there's the ubiquitous USB. For speed there's the real SATA. Is there really anything in between that needs eSATA at all ?
-Billco, Fnarg.com