AFAIK the so-called "model-27" and "model-54" are also informal names - they are just large capacity model-9 disks.
There is nothing in the UCB or DCE to distinguish a 'model-27' from a model-9. The only indication is capacity - and in the days of short-genning logical volumes that is a very unreliable way of determining a device model type. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of R.S. Sent: 19 July 2005 09:55 To: [email protected] Subject: Re: capacity of largest drive Steve Comstock wrote: > I've been trying to do a little research and > I'm getting mixed results. What I would like > to find is: what is the capacity of the largest > logical 3390 model supported by z/OS? > > Figures I've seen range from 8.5 GiB to 55 GiB, > from different sources. > > You folks are where the rubber meets the road, > can anyone tell me the current largest supported > logical 3390 model and its capacity? [and point > me to the best source for this for the future] 55GiB. 8.5GiB was the largest physical model of 3390 family. It was model 9: 3390-9. For many year it was also largest emulated DASD volume. Shark broke the limit with so called "model 27" (informal name), which is approx. 27GiB (32760 cyl/dev * 15 trk/cyl * 56664 B/trk). Recently IBM announced DSS family and by the way new emulation. It was 55Gib, I don't remember how many cylinders, but it a little bit less than 64ki. -- Radoslaw Skorupka Lodz, Poland ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
