what is the cost of adding two level of hardware RAID?
MacBook Pro, Mac OS X (10.7.4)
Hmm, what exactly is a two level RAID? Which RAID iteration?
Are you speaking Internal or External?
Which output ports does yours have?
Are you talking about something like Striped+Mirroring (RAID 0+1)?
Or are you talking about having several RAID boxes providing say RAID 5, and then joining them via some other RAID device into say a Mirrored volume?
Striped+Mirrored is a way to get redundant high transfer rate storage, assuming you have a fast enough channel connected between the Mac and the device (eg SAN, or all internal devices, or dedicated RAID card with multiple device ports, etc...). This Striped+Mirrored is frequently used in high performance computing.
If you are NOT talking about Striped+Mirrored, then it is less likely to offer much benefit. The forum participants would have to know exactly what you had in mind to give an opinion.
what is the cost of adding two level of hardware RAID?
