Hello! I have a question about slow restore speed of virtual machine.
Backup speed of 8 VM (parallel) is about 900...950 GBytes per hour
Restore speed of one VM on VMFS through SAN is only 75...80 GBytes per hour.
A similar rate of restore observed when restoring VM to the physical backup host (HP Data Protector 7: "Destination" --> "Restore to Directory")
Why restore speed so slow and how to increase it?
Infrastructure Descripion:
VMware vSphere 5.0 Update 2 Enterprise (ESXi Build is 914586)
12 hosts (HP ProLiant BL460c G7/Gen8)
VAAI Supported and Active
~100 VMs
10 VMFS LUNs, 2 TBytes each, Round Robin Multipathing
HP P6550 EVA with latest firmware (11001100)
FibreChannel, 4 Gbit/sec
HP MSL4048, LTO-5
HP Data Protector 7.0 Update 1 + Latest Patches
Physical Backup Host, Transport Method - SAN, LUNs in backup host disk management are "Online"