Use [Brann's Communicator] to contact Brann Bronzebeard and find out what to do next. Once you have completed Brann's instructions, use Brann's Communicator to contact Brann Bronzebeard.
We've seen the iron dwarves and their constructs making war on the creatures of stone that Brann calls the Earthen, along with their giant allies. Contact him and aid him in any way you can, and remember that anything we can learn from his search may aid us in fighting against the iron dwarves and their master.
Rewards
You will receive: 7 40
Progress
Did you complete the disk?
Completion
That was quick! Now that we have the disk, we have to find out how to use it to unlock the first half of the archive key.
Notes
Summon Brann's image with the communicator.
What kind of help do you require?
I've got a load on Norgannon's keystone, which guards access to Ulduar's archives, but the Titans divided it into two pieces and secreted them away
One of the pieces, the keystone's shell, is held within the Inventor's Library on the northern coast, south of Ulduar itself. The first thing you'll need to do is retrieve the fragments of an access disk from the library's guardians.