Is it bad practice to back up a SQL Server DB to a disk on the same machine? Obviously yes if it's a physical machine, but this is a VM. The VM is backed up daily with backups copied to the secondary site and retained for 90 days. The storage at the primary site has hourly snapshots taken and copied to the secondary site and retained for 3 years. We only have one storage array, so the only way to get them on different storage is to use a physical server or a NAS but we have neither.
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