An administrator must design a fault-tolerant IT environment for applications.

Active/Passive for Compute -

NIC Teaming for Network -

Dual disks for storage

Active/Active for Compute -

Link Aggregation for Network -

Erasure Coding for storage

Active/Passive for Compute -

Spanning for Network -

Dynamic Disk Sparing for storage

Active/Standby for Compute -

Multipathing for Network -

RAID for storage