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SRDF & RPA DIFFERENCE
Greetings,
Could some one please tell me the difference between SRDF & RPA Business Continuity Solutions . We use both the solution in our environment for data replication. Wondering, why RPA is required when SRDF brings continuous data protection and continuous remote replication for on-demand protection and recovery to any point in time. Ang feedback woud be appreciated.
Thanks
MJ
dynamox
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February 26th, 2010 20:00
RPA is more sophisticated in my opinion. It runs on a special appliance and provides continous data protection with ability to roll back to specific point in time snapshot. RPA also supports replication between EMC and third party arrays. SRDF is symmetrix only replication technology, it does not have all the bells and whistles RPA has but is a rock solid replication technology.
MJ3
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February 26th, 2010 21:00
Thank you so much for the quick and appropriate response..
Could also pls let me know if you have more information on the following as well.
1) Which technology (SRDF/RPA) is more economical in terms of licensing ?
2) What is the latency involved in RPA (Atleast the theoritical value… I heard that the SRDF/A has a theoritical latency of 30secs)
3) In our environment we have been facing issues with HBA failures due to which a re-zoning needs to be done, owing to which we end up doing a full sweep in RPAs. Is there any specific reason why port zoning hasn't employeed to avoid rezoning in case of WWN failures (Anyways in the current scenario we aren't using a different port in case of a port/gbic failure and wait till it gets physically replaced).
4) What is the limiation in amount of data that can be replicated and number of remote copies we can have wrt to SRDF & RPA?
dynamox
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February 27th, 2010 05:00
MJ3
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February 27th, 2010 18:00
Thanks Dynamox for your comments & suggestions.
We're using Cisco switches for RPA in our env & I was'nt aware of FlexAttach functionality. I did browse & realized that
administrators are benefited from FlexAttach when changes are made in san env's. Many thanks to you.
For the rest of my queries, is there a RPA expert who could share inputs.
MJ3
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March 23rd, 2010 07:00
Could some RPA experts, share some more information to my previous query