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- Number: A4TH071890U149 and F3TH072390U179
- Subject: Information on IDE Drives
- Date: August 1, 1990
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-
- GENERAL
- INFORMATION: IDE is an abbreviation for Integrated Device Electronics.
- Basically, it is a controller like the WD1003 integrated on
- the hard drive. A forty pin cable connects either directly
- to the signals on the system board or to an adapter card
- that fits in a bus slot. One drive (LXT200A by Maxtor) has
- been certified with the ISADISK driver.
-
- A further note on IDE drives. They were originally
- developed by Conner & Compaq, and are usually 3.5 inch
- format. They are becoming quite popular in workstations,
- because they don't need a seperate disk controller. Some
- IDE drives are "intelligent", have built-in HOT FIX, and
- often come low-level preformatted from the factory. You
- need to be aware that with these intelligent IDE drives,
- formatting them under COMPSURF can ruin them! This includes
- some Miniscribe drives, but not Compaq's and IBM's.
-
- The IDE drives' built-in controller is theoretically ISA
- (WD) - compatible. So use the ISA driver. Sometimes this
- doesn't work and you get an error message from NETGEN,
- COMPSURF, etc., about the drive type number being out of
- range. In that case, use the new updated version of ISADISK
- from NetWire, which usually seems to fix the problem.
-
- The problem with IDE drives is the very fact that they all
- have their own controller. So a server which works with one
- IDE drive, could fail if another one is swapped into its
- place. We haven't heard of any problems with 386 and IDE
- drives, but then that's probably because most of them only
- go up to about 100MB, so they don't get put in 386 servers.
-
- (X) This information was verified verbally.
-
- (X) This information was verified in the lab.
-
-