EBS limits on r5b.4xlarge

Question

I wasn't able to determine EBS limits on a r5b.4xlarge instance with the document below. (Windows 2022)

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/volume_limits.html

Trying to attach the 16th EBS volumes generates:

Device name:xvdundefined

Recommended device names for Windows: /dev/sda1 for root volume. xvd[f-p] for data volumes.

xvdp was the last successfully attached volume.

Thanks

Accepted Answer

Hi there!

From the documentation you shared, please note the following:

> Most of these instances support a maximum of 28 attachments. For example, if you have no additional network interface attachments on an EBS-only instance, you can attach up to 27 EBS volumes to it.

Do you have network interface attachments (FSx for example)? Those count as attachments.

I hope this helps.

EBS limits on r5b.4xlarge

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