On Mar 8, 2011, at 9:10 PM, William H. Magill wrote: > > Remember, the RP04 was only a 92MB drive (36bit words) with a 5.6 > microsecond/Word transfer rate circa mid 1970s ... a washing machine with > removable disk pack with about 20 10 inch diameter platters! > > The MIPS workstations lead DEC"s transition into 5-1/8 form factor "modern" > disk drives, accessed either via TurboChannel or SCSI.
As a DEC alum there is some inaccuracy here. DEC had long before gone to better and bigger drives before the MIPs stuff. The VAXStation I and II have 5 1/4" full size drives and things like RP05 and RP06, RM05, etc were long in use. When I was a night operator at ZKO in 1984 and 1985 we had RA80 (121), RA81 (456MB) in 1982, and RA82 (600MB) drives in huge disk farms hooked up to the VAX clusters. (These were not 5 1/4" drives but were sealed non removable large capacity drives for the time period). And the VAX Station (pre MIPS) had the 5 1/4" full height drives in the mid 80s. _______________________________________________ MacOSX-admin mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-admin
