-- snip -- Is there any way that I can identify if any volumes in the 2105 were created as 3390-9's.
Such as MVS console commands , HCD lookup or actually getting into the 2105? -- snip -- As you've already seen in the other responses, emulated 3390-9 devices are just 3390-3 with a certain standard number of cylinders. When you use the ESS Specialist to define storage, you can choose to define standard volumes or custom volumes. 3390-9 is one of the standard volumes (with 10017 Cylinders) that you can choose to auto-allocate. You can also choose to allocate custom volumes, namely, you choose how many Cylinders per device. I remember hearing that the ESS allocation for custom volumes was different to that of standard volumes (distribution of the space in the array), but I couldn't find a definitive explanation in the manual. Maybe someone could confirm (or dispute) this. In any case, whether a 3390-9 is defined as a custom volume or a standard volume in the ESS, MVS only sees that it is a 3390-3 type of device with 10017 Cylinders. John ---------------------------------------------------------------------- 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
