"Bruce Black" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > > > > > >I've come across a couple of references to a 3390-81. Now, we have -27 and > >-54 devices. > >Have I missed some announcement? > > > Never heard of it, and in our business we certainly would have. > > Don't forget that 3390-27 and -54 are fictional names, not official > ones. Although IBM occasionally uses them, they are not actual > designations. The large disks are identified internally as 3390-9 disks > > with an appropriate number of cylinders. > > However, many users and ISVs, including Innovation, use the designations > > for convenience. BTW, the numbers are the approproximate number of GB > on > the disk when it is defined as the maximum number of cylinders. > > --
The 3390-27 and 3390-54 models still serve a functional purpose: -27 has 32767 cylinders = halfword minus topbit, the -54 has 65535 cylinders = halfword. When the halfword boundary will be / has been lifted, there is no reason to define a new boundary a three times the -27. If any it will be skyhigh, like a 32bits or 64bits value. Kees. ********************************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. ********************************************************************** ---------------------------------------------------------------------- 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
