Hi Linda, "A question"??? I see 9 of them! LOL
I intermixed my responses below. I'm sure there are others out there who have more current info than I have but thought I'd get the conversation going. Rex -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Linda Hagedorn Sent: Monday, September 11, 2023 9:14 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: [EXTERNAL] Storage questions - mod9, mod27, mod54 Hi, I hope you won't mind a storage question. We're running zOS 2.4 and have a smattering of volume sizes - mod9, mod27, mod54. I'd like to have all mod54's for Db2 and be prepared before going to the storage folks. 1. Is storage virtual nowadays? Yes, it's probably been over 20 years since the last "real" 3390 was supported. 2. Can virtual mod9s and mod27s be reconfigured to mod54s? Yes 3. Does the reconfiguration require an IPL? This is a better question for your hardware vendor but I would think not. 4. Does the reconfiguration new addressing in IODF? This is a better question for your hardware vendor but I would think not. We were able to remove some addresses from disk ranges to convert to PAV volumes without having to relabel the remaining volumes so I would think resizing volumes would be similar. 5. Is the storage vendor (IBM, EMC, etc.) relevant? Shouldn't. 5a. Does the hardware determine or be a factor in merging the mod9s/mod27s, into mod54s? No, I've played with EMC, Hitachi, IBMN storage over the years and all have the capability. 6. Is it a given that the volumes must be cleared/emptied before the reconfiguration happens? Unless things have change that I'm not aware of, yes - see below. 7. How long does reconfiguration take? This is a better question for your hardware vendor, but it is going to depend on how many volumes you're creating etc. Is there anything else I should consider before taking this request to the storage group? Again, unless things have changed, I believe the entire string of volumes needs to be the same size. Every time we've wanted to resize a string of volumes we've had to deconfigure the old volumes in the array, sending the storage back to free space, then rebuild the new volumes from free space. Any information or advice is appreciated. Thank you. Linda Hagedorn ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- The information contained in this message is confidential, protected from disclosure and may be legally privileged. If the reader of this message is not the intended recipient or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any disclosure, distribution, copying, or any action taken or action omitted in reliance on it, is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
