Redudancy in Dell Perc3/QC controller and RAID10
Posted on 2003-03-05
My last system(Dell PowerEdge 4400) died because it seems the Perc controller corrupted the main container of RAID5 config, backing up from tape was not 100% successful. We are getting a new system with a storage array of 6 146GB disks( 3 as one stripped set and 3 more to mirror the first).
Now the controller is a Dell Perc3/QC with 2 internal and 2 external channels. When Dell helped me trouble shoot this they concluded that the container was corrupted by the contoller because it was running old firmware. Can this setup prevent this from happening again? If the controller corrupts the primary set, will it currupt the mirrored set?( I think so) I'm also not sure how the 2 internal channels work. Would one channel connect to the primary set and the other channel connnect to the mirrored set? And the external channels allow for more mirrored sets(arrays)? Does each channel have a backplane for each array of drives?