I have looked at a number of messages regarding software vs. hardware RAID here on SF but can't figure out which one I should use. The server I'm installing is HP Proliant ML330 G6 and the RAID controller on that is HP Smart Array B110i SATA RAID Controller (RAID 0/1/0+1). Is this a real HW RAID or should I just skip it and use the SW RAID?
The box has three disks, one 250GB and two 1.5TB disks. The smaller one I thought will have the /boot, / and /swap partitions and the two bigger ones will be on RAID1. How do I actually set this up? I tried using the tools that came with the server (StartSmart, as well as the ROM configuration utility) and configured the two disks as a RAID array, but the Ubuntun installer still sees them as two separate disks.
Should I just first install Ubuntu on the small disk and then configure the RAID array or should I somehow be able to configure the RAID array so that the two disks are shown as one to the installer?
Answer
Unless you enabled the battery backed cache and have a cache at all (not all HP SmartArrays come with that anymore, which boggles the mind) then I don't see much difference between the two. Software RAID is ever so slightly more fragile in extremity, but for nearly all running should perform just as fast. If not faster.
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