2009-07-14 John Eells <[email protected]>: > From my ex-CE's point of view, anything that might hold dirt or dust inside > a disk drawer is bad. Once the air starts to move some will eventually work > free, and if it should find its way into the disk pack/head interface Bad > Things will follow. You really want the airflow through the drawer to have > cleaned out the junk *before* the heads load to the home position and the > device becomes Ready, and for that you need smooth, dry, non-tacky surfaces.
I was "lucky" enough to actually watch a 2311 head crash once. The 2311, like some later OEM 2314s and 3330s, but unlike later IBM drives, had a clear lid that let you look down on the spinning pack. Summer student job in operations, the CE had done some maintenance on the drive, he put a pack in, we watched it spin up, and as the heads loaded the air inside turned slightly cloudy, and a moment later a red light came on. That was it - no great screeching noise, but when spun down, the pack was a lot less brown than it had been. The CE was particularly unhappy because it was one of our packs he had put in. :-( Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
