Hello folks, I am trying to find out what we could consider to be a "safe" maximum distance for mirroring DASD from one site to another. We have a situation where site #1 will be thousands (9,000) of miles away from site #2 (across the ocean.
I realize there would be a great deal of latency involved. But is this even possible or is it simply a non-starter? The second question I have is, suppose that I waved a magic wand and suddenly all my data was sitting comfortably in site #2. Could I (again ignoring latency for the moment) run a batch JOB or CICS transactions in site #1 that accessed the data 9,000 miles away in site #2? My thought here was if the data must absolutely be relocated, and people are willing to accept there will be latency, can we just access the DASD at site #2, rather than building a large data centre and performing all of the processing in site #2? Even if we run the processing at site #2, there will be many interfaces between site #1 and site #2. I know there are hard distance limitations. I think Global Mirror is limited to about 1500 miles. And I would hazard a guess that remote DASD would not be viable either. But I wanted to see if someone really "knows", rather than something I may have mis-remembered. Any thoughts/opinions are appreciated. Thanks ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
