Mohammad_akkoub

updated

15 years ago

M

Mohammad_akkoub

1 Rookie

•

34 Posts

0

3058

October 17th, 2011 23:00

Celerra failover testing

Hi Guys ,

How can I test a celerra failover ,

We have a celerra NSG2 Gateway .

Is there any way do the testing from the navisphere ?

what is recommended to do a failover or switchover .

BR

  • Jeffey1

    6 Operator

    •

    2755 Posts

    847

    0

    Posted October 20th, 2011 19:00

    If it's not necessary, please don't use failover in the destination! take care!

  • Mohammad_akkoub

    1 Rookie

    •

    34 Posts

    847

    0

    Posted October 18th, 2011 01:00

    Hi Rainer ,

    I mean FS failover butI need to make from GUI ..

    Is it only to select the FS and right click switchover , or thers are  pre steps i have to do it ?

    BR

  • Rainer_EMC

    6 Operator

    •

    8645 Posts

    847

    0

    Posted October 18th, 2011 01:00

    If you mean data mover standby see the „Configuring Standbys on VNX/Celerra” manual

    For failover you need to use the CLI (server_standby –activate) – for failback you can also use the GUI

    Rainer

  • Rainer_EMC

    6 Operator

    •

    8645 Posts

    847

    0

    Posted October 18th, 2011 01:00

    Try it from the other system

    Or look at the manual and GUI online help

  • Jeffey1

    6 Operator

    •

    2755 Posts

    847

    0

    Posted October 18th, 2011 20:00

    When you create a file system by using AVM system-defined storage pools, storage is automatically allocated from the pool to the new file system. Storage pools are the most high availability and performance. So please feel free for FS if DM pass the failover test. BTW, the FS cann't do failover test.

  • Rainer_EMC

    6 Operator

    •

    8645 Posts

    847

    0

    Posted October 18th, 2011 23:00

    I think He meant Replicator failover

  • Mohammad_akkoub

    1 Rookie

    •

    34 Posts

    847

    0

    Posted October 19th, 2011 04:00

    Thanks all , it's a replicator failover

  • Rainer_EMC

    6 Operator

    •

    8645 Posts

    847

    0

    Posted October 19th, 2011 05:00

    Typically when the GUI „greys“ out an action it means that it doesn’t make sense at that time or for that object

  • Jeffey1

    6 Operator

    •

    2755 Posts

    847

    0

    Posted October 20th, 2011 18:00

    Swithover and failover are very different function, let me explain it.

    Switchover process works as follows: 1. synchronizes the destination object with the source. 2. stops the replication. 3. mounts the source objects as read-only. 4. mounts the destination object as read/write so that it can act as the new source object. note: the swithover operation does not start the replication session again.

    Failover process works as follows: 1. stops any data transfer that is in process. 2. mounts the destination object as read/write so that it can serve as the new source object. 3. when the original source data mover becomes reachable, the source file system object is changed to read-only, an iSCSI LUN is changed to protected mode, and a VDM is changed to a mounted state.

    So if you try to test the failover, please don't click failover. You can perform a failover in the destination site, however, perfoms a failover will likely cuase with data lose. 

  • Mohammad_akkoub

    1 Rookie

    •

    34 Posts

    197

    0

    Posted October 24th, 2011 00:00

    Hello Jeffy ,

    Thanks for your reply , I have used the switchover for my testing and now everything is going fine .

    Regards