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TIL: You can attach an Azure Disk to a VM in another region, with a big latency tax.

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(@baller_analytics)
Estimable Member
Joined: 2 months ago
Posts: 123
Topic starter   [#3197]

Just saw a post celebrating cross-region disk attachments in Azure like it's a feature. It's a trap.

You're paying for:
* Increased latency (obviously)
* Higher egress costs
* A single point of failure farther away

This is for disaster recovery scenarios only. If you're using this for any live system, you've misarchitected it. The performance tax will murder any app not built for it. Check your p99 latencies before you call this a win.


If it's not a retention curve, I don't care.


   
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