Which is the simplest way to improve the backup performance for these virtual machines?

An administrator notices that the database virtual machines fail to backup within the backup window. Each database virtual machine has 4 vCPUs, 16GB RAM and 12 virtual disks. There are 16 database virtual machines to backup using 8 backup jobs.

Which is the simplest way to improve the backup performance for these virtual machines?

A.
Add a backup job for each virtual machine.

B.
Set a 16GB reservation for each virtual machine.

C.
Add 1MB VMDK drives at 1.0, 2.0 and 3.0 on the VDR appliance.

D.
Upgrade the array to 8GB FCP and ensure multipathing is configured properly.

5 Comments on “Which is the simplest way to improve the backup performance for these virtual machines?

  1. capn says:

    Can someone please explan why the answer is C? VDR is not mentioned anywhere in the question. Even if it was, how does it help to add 1 MB drives?

      1. Dan Boring says:

        “By adding a dummy disk of 1 MB to another SCSI bus adapter, the total available SCSI bus locations for hot-adding increases to 30, so all 8 virtual machines in the example given here can be backed up simultaneously using hot-add.”


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