Classification: Confidential Beware of GRS performance issues in ring mode. I ran some tests and as the number of images increases, ring mode response escalates rapidly.
-----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Brian Westerman Sent: Friday, June 21, 2024 1:42 AM To: [email protected] Subject: Re: GRS in MONOPLEX without physical CTCs ? [CAUTION: This Email is from outside the Organization. Unless you trust the sender, Don’t click links or open attachments as it may be a Phishing email, which can steal your Information and compromise your Computer.] You can just use extra FICON interfaces as FCTC's. IBM refers to that method as a baby sysplex. It allows you to have GRS in ring mode. TO have star mode you need CF's. If you have multiple LPARs and you share dasd, then you need either CF's (expensive) or Ficon CTCs (pretty cheap). The setup is very simple. CF's are much faster but ficon CTC's easily handle 3,4 or 5 lpars without any issues at all. Brian ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ::DISCLAIMER:: ________________________________ The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. ________________________________ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
