Post reply

Cold standby,Warm standby & Hot standby solutions

  • February 17, 2011 at 4:45 am

    #147131

    Dear All,

    Can someone clear out my doubts here?please

    What is the meaning of Cold standby,Warm standby & Hot standby solutions ?

    NOTE:Please provide me the examples for each of one.

    Thanks in advance.

    Regards,

    Ravi.

  • February 17, 2011 at 6:36 am

    #1288187

    Hot standby is a server that will automaticaly failover if the primary server fails. You can get this using synchronous mirroring + witness (not sure if a cluster can be called a hot standby).

    Warm standby is a server that will not automaticaly failover and that may not have all the latest transactions. You can get it by using log shipping or asynch mirroring.

    Cold standby is just a spare machine that needs to be turned on, backup restored (or even full staging of the machine).

  • February 17, 2011 at 11:29 pm

    #1288646

    Thanks for you reply !!

    Regards,

    Ravichandra.

  • February 18, 2011 at 2:51 am

    #1288708

    Oliiii (2/17/2011)

    Hot standby is a server that will automaticaly failover if the primary server fails. You can get this using synchronous mirroring + witness (not sure if a cluster can be called a hot standby).

    Warm standby is a server that will not automaticaly failover and that may not have all the latest transactions. You can get it by using log shipping or asynch mirroring.

    Cold standby is just a spare machine that needs to be turned on, backup restored (or even full staging of the machine).

    I would call a cluster a "hot standby". Anything high availability model which "should" require no intervention in the event of failure would a hot standby.

    Mirroring with a witness is a hot standyby. Mirroring without a witness is a warm standby.

Viewing 4 posts - 1 through 3 (of 3 total)

You must be logged in to reply to this topic. Login to reply