G-RAID 12 TB drive won't power up

LoriAdamsPhoto wrote:

my G-Tech G-RAID from about 2015 just stopped powering up. It was set to RAID 0 or JBOD (it has been a while since I used it and believe it was one of those two).

RAID 0 & JBOD are two different storage configurations, so it would be important to know what the problematic G-Tech drives were configured as.

Ref: JBOD vs. RAID: What Are the Differences? - Trenton Systems

I tried putting the older 6 TB drives into the new enclosure and regardless of which way I configured it, (I tried Raid 1 also, just in case) and it still says the drives need to be initialized.

Although, in theory, these storage configuration types should be compatible, it's up to the drive enclosure manufacturer to implement them properly. Just swapping drives to a new enclosure may not work as you have experienced.

Is there a way to test the internal board on the older/2015 enclosure and figure out what component there may be fixable?

Possibly, but this would be a good question to ask the manufacturer's support team.

Or is there a way to try to download an older Configurator for the older model and try on the newer model (I can use a backwards compatible cable to with older IMAC running Catalina). If so, is there someone I can get the older Configurator software from? I cannot find it on my older IMAC.

This too would be good questions to ask the manufacturer.

LoriAdamsPhoto wrote:

Am wondering if an enclosure designed for 8TB can also be used for larger sized individual drives. What do you think?

The manufacturer should provide the enclosure's drive size requirements.

If you haven't decided on which manufacturer you want to go with, I strongly suggest that you give OWC (Other World Computing) a try. They not only sell these enclosures, but provide great customer support, during and after the sale. I do not work for them, but have been using their products for years and have never had a bad experience doing so.