Photo: Red Hill.
Seagate U4
The Seagate U Series 4 — confusingly, the first of the U Series drives — looked very odd when it first arrived but soon showed itself to be firmly in the tradition of the Medalist 4500s: unfashionable, reasonably cheap, as reliable as sunrise, and generally quite sluggish.
On the whole, we didn't like U4s all that much, largely because of the quite noticeable speed difference between a U4 and competing products (initially the 6.4GB Western Digital and outgoing Seagate ST36422).
Nevertheless, we ended up using a reasonable number of them for a time, mostly the 6.4GB version, because the older, faster ST36422 went out of production and the Western Digital suffered from alternating bouts of stock shortage and too-high pricing. Eventually we switched to the Samsung Spinpoint 6.4, which was equally well-priced, noticeably faster and (as we gradually began to realise around this time) superbly reliable.
Performance | 1.15 | Reliability | AA2 |
Data rate | 206 Mbit/sec | Spin rate | 5400 RPM |
Claimed seek | 10.5ms | Buffer | 256k |
Platter capacity | 4.3GB | Interface | ATA-66 |
ST-34311A | 4.3GB | 2 GMR heads | |
ST-36421A | 6.4GB | 3 GMR heads | ** |
ST-38421A | 8.4GB | 4 GMR heads |