Curious what other folks are experiencing. I’ve had the device since Nov 2013:
2.5" drives are capped at 1 TB each. If you need more than ~2 TB of space, don’t get this model. It doesn’t support any 2.5" drives over 1 TB, so with 4-bays, dual redundancy + overhead you barely get 2 TB with 4x1TB drives.
The Thunderbolt speed is very disappointing. Used to other external drives using Thunderbolt, the Drobo Mini seems faster than USB 2.0, but not by much. Mega copies (25+ GB) still take a long time (hours), whereas full Thunderbolt support is minutes. I know there is overhead using the managed RAID Drobo uses, but it’s a significant decrease from normal Thunderbolt speeds.
I purchased 4x1TB HGST drives and within 5 months, 3 of the 4 drives died. I had each replaced using the HGST warranty and within 1 month, 2 died. Finger pointing aside, I’ve had a lot of drives and Drobos over the years and NEVER have I had this kind of failure rates. Did I get some sort of bad batch of drives? Maybe, but twice? Unlikely.
The unit NEVER goes to sleep. My other Drobo units would go to sleep when my computer did. I have an energy saver time frame from 10pm to 5:50 am where my system sleeps, then is up during the day hours. The Drobo Mini NEVER went in to sleep. Maybe I missed the setting, but there is nothing in the dashboard to have the unit go to sleep. I assumed it would when the system did, but it doesn’t. This causes all kinds of other issues like heat, drive spin time, reduction of life, etc.
I have Time Machine via iMac 1TB HDD, Home Movies, iPhoto Library and other various backups on the drive. I’m not an extreme iPhoto user (couple times a week) and the Home Movies is really for archive, not editing or other intensive tasks.