If you loaded the system with 4 fast HDDs (eg. 4x 1TB) (2.5 ") and even donated a m-SATA SSD has for around 700 euros a very flexible and secure storage system. The system is set up in a few minutes and is ideally next to the desktop computer space. Drobo Mini is neither loud (only normal fan noise), the system is still very hot. The system comes at data rates up to 300 Mbytes / s (250 MB / s write).
One should inform on the Drobo page before buying, how the system works. The highest performance is achieved with 4 HDD and a m-SATA SSD. Breaks a plate, you can simply replace the disk, without losing any data during operation. Depending on your needs, you can increase the capacity of HDDs with time, while you can mix any HDDs with different sizes. So there is always enough memory is available and you are protected against a hard drive failure. If the Drobo Mini is defective itself, you can migrate the drives to a new Drobo Mini.
Certainly other RAID0 systems or an external SSD are much faster. But then you have to constantly make a backup to avoid losing data in hard disk crash. That can not happen so mini with Drobo. And around 300 Mbit / s is not slow, on the contrary, the storage system is good for video editing.