September 5, 1987 CONTROL DATA refurbished disk drives are now for sale directly from Magnetic Peripherals, Inc. a Control Data Company in Oklahoma City. I bought my ST506 Wren II 86 megabyte (unformatted) 5&1/4 rigid disk drive for $600.00 plus tax. This is a great deal on a top quality high capicity drive. Specifications (full-height) Wren II Wren III Wren IV ============================ ======= ======== ======= Capacity 86 182 300(formatted) Disks 5 5 5 Data surfaces 9 9 9 Tracks/surface 925 969 1365 Track density (TPI) 960 960 1280 Recording density (BPI) 9274 19,058 19,058 Average latency (ms) 8.3 8.3 8.3 Typical seek time (ms) 28 16.5 16.5 Transfer rate (Mbytes/sec) SCSI (NRZ) NA 1.25 1.5 ESDI (NRZ) .625 1.25 NA ST506 (MFM) .625 NA NA MTBF (hours) 30,000 30,000 30,000 Service life (years) 5 5 5 You can also inquire about half-heights, Larks, Finches, Hawks, CMDs & MMDs. So far I am very happy with my Wren II. This drive runs so smoothly that I can't even tell that the head is moving when it reads & writes. If you are interested write or call: John H. Walling, Jr. Product/Program Manager 4000 N.W. 39th Oklahoma City, OK 73112 (405)949-7460 I'm one of the first individuals to have the opportunity to buy directly from this OEM. The refurbished status of these drives is the way around the "distributor only" sales policy of CDC. These disk drives should operate as new ones, and they do come with a 90 day warrenty. If you are interested in finding out the latest status of a refurbished Wren II give my RCP/M a call. Constitutional Pathway Thirteen 24hrs. 7days 300/1200/2400 baud (405)329-6464 Whitney L. Boutin, Jr.