Using HDTach, I achieved these performance results ...
Strengths: Relatively fast throughput for a firewire drive
Weaknesses: Not as quiet as expected from a Seagate Barracuda hard drive (possibly a noisy fan in the enclosure?), cooling should have been passive thermal radiated to eliminate extra noise. Bulky enclosure.
Summary: Using HDTach, I achieved these performance results from this hard drive on my Pentium 2.8 GHz system...
Random Access: 15.4ms
CPU utilization: 4% (+/-2%)
Average read: 36.6 MB/s
Burst Speed: 40.0 MB/s
Compare these numbers to an internal Seagate Barracuda 120 GB Ultra ATA drive (ST3120026A)...
Random access: 15.1 ms
CPU Utilization: 5% (+/-2%)
Average read: 47.1 MB/s
Burst speed: 82.1 MB/s
Note that the theoretical maximum burst of a firewire 400 bus is 50 MB/s, so this drive comes pretty close to fully utilizing the theoretical bandwidth. This drive is definitely fast enough for DV video editing, music recording, and of course file backup. If you are expecting a whisper-quiet drive, this drive might disappoint you. The clicking of the heads as they access data on the disk is louder than a similar internal Seagate Barracuda drive that I used in a fan-less external hard drive enclosure. It's possible that I got a noisy drive.
Good luck!

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