It might not be possible in a real (total) disaster to reverse the replication.
However, the DR procedures can also be used in different situations. The simplest is a partial disaster or other problem, like a problem in the CPU room, without problems in the DISK room. Or we executed the procedure when a potential dangerous action was to be carries out on the powersupply in one of the buidlings. In both situatoins you execute the DR procedure with the clear intent to return soon to normal operation. In these cases you will like to reverse replication, to keep both mirrors intact. Kees. > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Tom Marchant > Sent: 14 February, 2019 17:58 > To: [email protected] > Subject: Re: Wells Fargo? Well f*&%#d at the moment: Data center up in > smoke, bank website, app down . The Register > > On Thu, 14 Feb 2019 07:27:36 +0000, Vernooij, Kees (ITOP NM) - KLM > wrote: > > >Just reverse the replication when starting up the DR site. > > That isn't necessarily a real DR test. In a real disaster, you may not > be able to > replicate the data back to the primary site for a considerable period of > time. > > >And reverse replication again after returning to the normal site. > > That part should be easier. > > -- > Tom Marchant > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
