Do drobos support write caching? The big problem with redundant disk arrays is that both reads and writes inevitably have to read/write at least two disks. The reads can sometimes optimise the process (e.g. mirrored drives can use “first past the post” to minimise rotational delays) but the writes were always a problem.
To overcome this, RAID cards sometimes have a write cache with a battery backup. My office one does. So writes go at cache speed. In the event of a power failure, I have 24 hours to get the power back before I face data loss. Given the cheapness of memory, and its low power consumption, it should be simple to include a battery backed write cache in drobos.
As it happens, I run my drobo on a UPS, so I don’t even need the battery. If there were an option, I could enable write caching in safety. I already have write caching enabled in Windows, but more is always better!