Comments on: Replicating SAN to DR Site http://itknowledgeexchange.techtarget.com/itanswers/replicating-san-to-dr-site/ Sun, 19 May 2013 03:14:28 +0000 hourly 1 By: skluba http://itknowledgeexchange.techtarget.com/itanswers/replicating-san-to-dr-site/#comment-58219 skluba Mon, 01 Dec 2008 16:07:57 +0000 #comment-58219 Your replication method depends on a few factors, business need, cost, in house capability, current technologies in place. There is not a lot of information to work with. However, the type of questions you ask, can lead you to the proper solution. There are a variety of technologies that you can employ to replicate your data. such as host based replication, SAN based replication, database replication, application based replication, etc.
Some questions to consider
1. If you truly need up 1 to 2 hour old data at the alternate site, it sounds like you need to replicate at least once a day? What type of database is employed? Oracle or SQL? What does the app architecture/system look like?

2. What is the real RTO & RPO of the applciation?

3. Is the data on a SAN, NAS, or local disk? If its SAN based, this may be your answer using SAN based replication through existing SAN Mgmt tool.

4. How quickly can the application be brought up at the alternate site?

5. How far is across town? 10 miles, 20, 50. Any bandwidth limitations? Depending on the type of replication used, distance could be a factor in your solution.

6. How much growth and scalability is expected?

These are just some starting points to consider. Good Luck.

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