We use a physical server running VEEAM Backup and Replication to backup our virtual environment. Our VEEAM backup server connects to iSCSI storage over 1GB links and has a direct attached SAS backup drive. I notice in the mornings when we copy our backup files to tape, the 1GB iSCSI link is always 100% utilized. I got to wondering if we'd be better off with direct attached storage for this setup. How much faster would it be going from direct attached storage to direct attached tape vs going from iSCSI storage to direct attached tape? The tape device is an HP LTO5.
If using direct attached SAS storage is the way to go, what is a lower end SAN that would work well and could provide about 10TB of space?