- Fujitsu Eagle
The Fujitsu M2351 "Eagle" was a hard disk drive with an SMD interface that was used on many servers in the mid-1980s. It offered an unformatted capacity of 470 MB [Net capacity available would range between 330-380 MB, depending on formatting] in 10-1/2
inch es (6U) of19-inch rack space, at a retail price of about US$ 10,000.The data density, access speed, reliability, use of a standard interface, and price point combined to make it a very popular product used by many system manufacturers, such as
Sun Microsystems .The model 2351A incorporated eleven platters rotating at 3,960
rpm , taking half a minute to spin up. The Eagle used 10.5 inch diameter platters, unlike most of its competitors which still used the 14 inch standard set in 1962 by theIBM 1311 . One moving head accessed each data surface (20 total), one more head was dedicated to the servo mechanism. The model 2351AF added 60 fixed heads (20 surfaces × 3 cylinders) for access to a separate area of 1.7 MB.The Eagle achieved a data transfer rate of 1.8 MB/s (a contemporary 5¼-inch PC disk would only deliver 0.4 MB/s).
Power consumption (of the drive alone) was about 600 watts.
Notes
External links
*http://www.sun3zoo.de/en/specs.html Specifications
*http://www.sun3zoo.de/50/eagle-front.jpgImage of an Eagle
*http://www.sun3zoo.de/50/eagle-disks.jpg Disk enclosure
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