←back to thread

Mainframe upgrade done with wire cutters (2010)

(alt.folklore.computers.narkive.com)
46 points WorldPeas | 4 comments | 28 Aug 25 23:30 UTC | HN request time: 0.554s | source
1. somat ◴[01 Sep 25 08:11 UTC] No.45090640[source]▶
Unrelated, but the title made me think of this video where AT&T failed over old switch frames to new ones by manually cutting all the cable bundles, very dramatic.

https://www.youtube.com/watch?v=saRir95iIWk (Speedy Cutover Service, SXS switching cutover to ESS filmed live at Glendale CA central office, 1984)

replies(3): >>45092304 #>>45093467 #>>45096335 #
2. prasadjoglekar ◴[01 Sep 25 12:45 UTC] No.45092304[source]▶
That was super interesting to watch. Only 4 mins long. The supervisor was visibly sweating during the cutover.

I'd love to see something similar at GCP or AWS.

3. eszed ◴[01 Sep 25 15:25 UTC] No.45093467[source]▶
Wait... So that's why it's called "cutover"? Amazing.
4. jiehong ◴[01 Sep 25 20:27 UTC] No.45096335[source]▶
"Wait, there is a problem, fallback now!"

They must have built high confidence beforehand! Hats off!