@Snowdrum_AV Unfortunately there is no support for the raid controller from Apple or HighPoint for Yosemite, revert back to Mavericks
@visualvrtx You can consult with one of our out of warranty service center partners
@davewowchuk it appears the problem is with the AC power adapter and we have requested a replacement for you, is this correct? @GTechStorage
@davewowchuk how did your hard drive die? did you get a case number from our support center that we can reference? @GTechStorage

G-SPEED Q - RAID Configurator

Using the G-Technology configurator, you can change the RAID settings to either RAID 0 (Stripe) or RAID 5 (Redundant Stripe). The RAID 0 setting will allow for an increased performance across both drives and display the maximum capacity available. The RAID 5 configuration allows you to write partial data across all drives. For example in a G-SPEED Q with 1TB (x4) drives, the end capacity would be 3TB of storage. The "missing" 1TB of space in this example is used to hold partial amounts of data in the event any 1 drive in the RAID fails.

Mac OS X 10.6 and higher
Operating Systems

Win XP, Vista, win 7 & Win 8
32-bit Operating Systems

Win XP, Vista and 7
64-bit Operating Systems