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Itegral's avatar
Itegral
Level 6
12 years ago

BMR vs Unix disk mirror

Could someone do a comparison between Symantec BMR and Unix disk mirroring. This is in reference to a migration activity for Solaris OS to a new Data Centre. The current root partition of the hosts...
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  • Yasuhisa_Ishika's avatar
    Yasuhisa_Ishika
    12 years ago

    You are compareing High Availability vs Disaster Recovery - these two is completely different.

    By disk mirroring, your system is protected from single disk failure. But disk mirroring does not protect your system from disaster incluing data loss by mis-operation.

    Whereas, system backup(BMR) does not provide high availability. BMR des not protect your system from disk failure - when disk failure occurs, the system may stop. But system backup provide you recovery point of your system. When system get corrupted, you can recovery your system from system backups.

    BMR is not aware of RAC. It just provide automated system recovery method. After recovery, you may need  some steps to get RAC work. You should make POC in test environment.

Itegral's avatar
Itegral
Level 6
12 years ago

Thanks Mader. 

BMR support for dissimilar hardware on Soalris is not supported, right? 

1 - Also, BMR for Oracle RAC is not a published document, however there is a method to overcome this requirement. How about Symantec support's  view on BMR RAC, are they going to assist if required?

2 - I am more educated on BMR now, thanks for your help previously, could you help me gathering some high level points on disk mirroring process, limitations, risks & implications? I'll have to present it back to business and formalise a preferred approach.