LUN size best practice

[pizzim13]

What is better practice for lun sizing for a Veeam backup target if all storage is on the same SAN, one large lun or multiple smaller luns?

[Gostev]

One large LUN, otherwise too much wasted space collectively across multiple LUNs. Not to mention that small targets are calling for all those additional management headaches - you would have to be carefully sizing backup jobs, watching backup size constantly to prevent overfill, etc.

[pizzim13]

This is because Windows only does file level locking and not lun level?

[Gostev]

Sorry, I was already updating the post above with more details while you typed this.
Sure, locking is file level with NTFS.