Home > Storage > Unity XT > Storage Admin > Dell Unity: Best Practices Guide > Host Alignment for Block LUNs
Alignment only needs to be done for host operating systems which still use a 63-block disk header. If alignment is required, perform the alignment using a host-based method, and align with a 1MB offset.
See the “Host Connectivity Guide” on https://support.dell.com to determine if alignment is required for your operating system, and how to perform the alignment.