Drobo reports itself as a “removable volume” to Windows. Such devices have a choice of policy:
Optimise for quick removal (default)
Optimise for performance
[/list]The default assumes that such devices are portable, and often removed. All disk writes occur immediately.
The second choice is for fixed drives which happen to be USB connected. Windows caches certain disk writes, which noticeably increases disk performance.
I’ve aways set my external USB drives to the second option, and never had a problem. Mind you, I run my system on a USB, so I’ve never had a write lost because of a power failure. NTFS is “power failure safe” insofar as your disk structure will remain intact, but you may lose your most recent changes.
Does drobo have any recommendation on this (other than the anticipated “don’t do that” from the lawyers)?
I’m about to set my Drobo to run this way (it requires a reboot), so if you don’t hear from me for a few days, you can assume that it didn’t go so well.