Hi Varun,
This is a partial answer because I haven’t used RAIDs either.
I can’t tell from your description exactly how you plan to use a new RAID drive and the 3 external drives.
Keep the 3 external drives as a source for footage and use the RAID drive for new projects and caches?
Editing speed would be dependent on speed of access to those drives.
Transfer all the footage to the RAID drive and keep your external drives as backup?
That would be the fastest option for editing, using a Tbolt connection.
My opinion is that it’s good to buy into the highest speed connections possible so get a RAID with Tbolt connection.
You can use adapters and hubs to access legacy drives.
I do have experience daisy-chaining G-tech drives with Firewire 800. Access gets slow the farther out on the daisy chain you go.
Right now I keep a vintage MB Pro to work with vintage NLEs, using Firewire 800. With my new MB Air, I use a hub to connect my Tbolt machine to daisy-chained Gtech drives. I
Or USB 3 directly to the macbook air.
I’ll have to get a new macbookpro before long, will gradually switch to Tbolt drives for editing and keep the old Gtech drives for backup.
You must need a lot of backup space for your doc.
Best,
Robert
Robert Withers
Independent/personal/avant-garde cinema, New York City