I have listed a series of areas that can help you increase backup performance and help you to avoid over-running an maintainence windows:
Networking:
- Enable port aggregation on your switches creating an etherchanell with something like LACP or PAgP (Cisco Switches only.)
- Enabling Jumbo Frames - by increasing the frame-size you reduce the header overhead, although on unreliable connections this can be more trouble that it's worth!
Disk Configuration:
- Utilize fast media such as SSD, SAS 15k
- Consider modifying RAID configuration for faster read / write speeds e.g. RAID 0, RAID 10, RAID 50.
- Performing defragmentation on the disks.
OS Configuration:
- Disabling SMB Signing: If you are backing up over SMB this can have a dramatic increase of performance. For instructions see here.
- Configure NIC teaming in Windows Server 2012
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