The delay also depends on the distance between the primary and secondary disk systems owing to the speed of light being regrettably finite.
On Tue, 1 Feb 2022 at 18:21, Mike Schwab <[email protected]> wrote: > It will delay synchronous writes, because the write is not returned > until the mirrored disk is updated. Asynchronous writes do not delay > the return since it occurs when the primary disc is updated. > > On Tue, Feb 1, 2022 at 5:50 PM Peter <[email protected]> wrote: > > > > Hello > > > > Recently we were a victim of storage replication link between production > > and DR site(metro mirroring). Due to this many of our batch jobs took > more > > time than expected. So here I would like to understand how the dasd > update > > happens ? For example when a batch allocates some dataset on DASD in > > production site so does it returns back or finishes off the I/O operation > > is finished from both production and DR ? > > > > If there is latency in dark fibre connectivity between production and DR > , > > Will it impact the batch job elapsed time ? > > > > Could someone please shed some light on this? > > > > Peter > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > > > -- > Mike A Schwab, Springfield IL USA > Where do Forest Rangers go to get away from it all? > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
