ITYM ECS. (Enahnced Catalog Sharing). ECS is specific to catalogs and uses a structure for inter-image communication. RLS uses a local address space (SMSVSAM) for local communication AND a structure for inter-image communication.
Both are performance related. IMO, RLS is more appropriate for applications. ECS is less overhead. ECS should be sufficient for most purposes. I have not researched the practicality or mpact of attempting both on the same catalog (KSDS). HTH, -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter Vander Woude Sent: Thursday, April 23, 2020 9:29 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Catalogs in parallel sysplex ECS vs RLS [CAUTION: This Email is from outside the Organization. Do not click links or open attachments unless you trust the sender.] Ok, building parallel sysplex. For the catalogs I am planning on using ECS for the shared catalogs (which is all of them). What is the recommended method for handling the catalogs in a parallel sysplex, ECS or VSAM RLS? Thanks, Peter ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu 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 lists...@listserv.ua.edu with the message: INFO IBM-MAIN
