My envt has 2 celerra NS40G (5.6) , one at each site .. one Celerra is acting as production and other is acting as DR for production .. We have SRDF -S between the 2 celerra's .so failover can be executed on DR celerra once the production goes down .. DMX-4 is backend from where Celerra gets SAN , 2MDX-4 one at each site .
Now i have to add additional 1.5 TB SAN space on production , which means i will have to add same 1.5TB SAN on DR side as well .. Can someone provide the steps for doing this , allocation is not a problem .. how to get them into DG's on both sides and ensure they are getting replicated .. will this require any downtime.
Re: Need steps for adding 1.5TB space to Celerra .
I am not sure if Celerra supports Dynamic SRDF. You will want to check that out with your local EMC team.
support for dynamic SRDF was just added recently in 5.6.44
From the release notes:
Dynamic SRDF Celerra® Network Server version 220.127.116.11 introduced and supports the Dynamic SRDF® (Symmetrix® Remote Data Facility) functionality. Dynamic SRDF enhances the disaster recovery (DR) solutions that are currently available with Celerra Network Server. When the DR site is activated, Dynamic SRDF synchronously mirrors Celerra's volumes back to the original source site. This reversal of remote mirror protection adds another level of redundancy in the event that the DR site becomes unavailable. It also reduces the downtime required to synchronize data during a restore because the synchronize phase is no longer needed with Dynamic SRDF.
When the DR site is activated, Dynamic SRDF reverses the direction of data mirroring. As a result, the data is synchronized from the DR site to the original source site. The NFS or CIFS client that initiated the I/O request receives the write-acknowledgement only after the remote storage system validates the data in cache, thus ensuring data consistency.