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Partition offset and allocation unit size of a disk for SQL Server

SQL Server performance is dependent on the server resources available and disk performance is probably the most important resource. To maximize disk performance for SQL Server, I've always been told that the drive's partition offset must be set to 32K and the allocation unit size set to 64K for partitions that hold data and 8K for partitions that hold logs. How do I find out the allocation unit size and partition offset for my drives?

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Question of the Day

BIT_COUNT II

In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:

UserID  UserPermissions
15
23
37
4       NULL
What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 4;

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