RAID-5 with multiple RAID Adapters?

[FrankieAIX]

Is it possible to create a RAID-5 array using (2) RAID Adapters?



Thanks!

-FrankieAIX

 

[wahnula]

Wow, there would be too may HUGE "if"s" in this scnario,not somthing you'd like to hear bout a RAID5 setup. Make a stick-with you-for like decision and buy SATA or SCSI extrenal a 3ware

 

[LawnBoy]

You can run RAID5 on two channels of the same controller, but I've not heard of anybody using two controllers unless they were specifically designed for it.

You would have to have a "master", and a way for the "master" to communicate with the "slave".

 

[FrankieAIX]

LawnBoy,

That is what i figured, but I wanted to throw the idea or possibility out there and see if anyone ever heard or done this before...


Cheers!

-Frankie

 

[LawnBoy]

Generally you just buy more channels on your controller.

 

[kmcferrin]

Or tie it together with software. In other words, you have two 4-port RAID controllers, you hang a total of 8 drives off of them, then you create a software RAID in the OS software. But that would be much slower than a hardware array, and if you lose the OS somehow then you can lose the array. But if you are building a NAS-type box then that might make sense because the CPU wouldn't be doing anything but serving data.

Some other options would include making two separate 4-disk arrays of whatever type and then striping across them in software.