I have one existing raid card (9240-8i)with 8 sas hdd, but i want to add 8 more hdd with another raid card (same model), but i wan to merge with existing raid and add it as expansion, can it be done?

  • If you need expansion, use expanders behind your MegaRAID controller. As simple as that.
    – the-wabbit
    Aug 11 '14 at 10:11

No. GENERALLY not, and no with MegaRaid. There was once one that coudl do that (RaidCore IIRC) but that technology is not available anymore.

As RAid cards function as independent sub-controllers you can not have a Raid volume spanning 2 of them.

You can do that in the OS though.

  • Just bear in mind that if you do that, you can end up decreasing your resilience, by increasing dependencies.
    – Sobrique
    Aug 11 '14 at 9:38

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