Monday, February 9, 2015

raid - MegaRAID JBOD substitute



It seems that certain MegaRAID chips don't support JBOD (unfortunately).



I've read online that to make these controllers act as a pass-through, I should configure the disks in RAID0.



What RAID0 settings do you recommend?


Answer



I run this exact setup. MegaCli has a useful option called something like CfgEachDskRaid0 which will configure every disk on the array as raid0, ensuring a consistent configuration.




It's not true that it's impossible to hot swap disks with this setup, although it is clunky to do so (especially because MegaCli itself is hardly a paragon of usability), basically involves deconfiguring the old raid array and reconfiguring a new one every time you want to swap a disk.


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