Photo: Red Hill.
These were the grand old days for NEC as a hard drive maker. In 1987 when these were selling new, NEC drives were a premium product, suitable for fitting to a top-notch 8 or 10MHz XT clone with an EGA monitor and 640k of RAM, or even a 12MHz 286 rocketship system.
Like the Seagate ST-251H , the D5126H was a high-performance variant of a slower drive. The H variant was much the more common of the two — the standard 5126 was vastly slower at a glacial 85ms.
Obviously, the appearance of the outside of a drive has nothing to do with its quality and reliability — or does it?
Over the years we have observed, as a rule of thumb, that there is a distinct correlation between how well drives are finished and how well they perform in the longer term. It is not an infallible rule, of course, but all else being equal if the manufacturer has made the extra effort to make its product look attractive, it will usually have put its best efforts into getting the inside of the product right too. And when a drive maker suddenly starts producing cheap and nasty looking drives — as Maxtor did through the 540MB to 2.1GB era, for example — all too often it is feeling the financial pinch and its quality is dropping too.
|Data rate||5 Mbit/sec||Spin rate||3600 RPM|
|AT drive type||2||Form||5.25" half-height|
|D5126H||21MB||4 thin-film heads|
|D5146H||42MB||8 thin-film heads|