Pre-Warming of EBS Volumes is not necessary

Amazon Web Services AWS EBS

A number of people have asked me about pre-warming of new EBS volumes. I do realise that there are a lot of courses and exam dumps out there stating this is necessary. In fact it is not necessary with new volumes and if you answer this incorrectly you will lose valuable marks on the exam.

The only situation where preparation is required before access is with volumes that were restored from a snapshot:

"New EBS volumes receive their maximum performance the moment that they are available and do not require initialization (formerly known as pre-warming). However, storage blocks on volumes that were restored from snapshots must be initialized (pulled down from Amazon S3 and written to the volume) before you can access the block." Initializing Amazon EBS Volumes

When in doubt read the docs

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