Unusual Partition Alignment Value

[soulemike]

When I was reviewing the PowerShell module for the New-VolumeFromRawDisk cmdlet. I saw that the alignment was set to 4,000 KiB, which although divisible by 4,096 seemed unusual. I tested and found that 4,000 KiB alignment was almost the least performant option given my conditions.

I didn't find anything very clear within the AWS documentation in general, only the EBS volumes Size and configuration constraints document.

Is there a specific benefit to using 4,000 KiB as the alignment?

Testing: https://snozzberries.github.io/2022/07/23/aws-ebs-partition-alignment.html

Reference:

quickstart-microsoft-activedirectory/scripts/Modules/Module-AD/Module-AD.psm1

Line 41 in c543d4e

$DriveLetter = New-Partition -Alignment '4096000' -DiskNumber $BlankDisk -AssignDriveLetter -UseMaximumSize -ErrorAction Stop | Select-Object -ExpandProperty 'DriveLetter'