Server & Workstations Still Sluggish Due to Storage Rebuild

The main server (ms) is still sluggish; consequently, the workstations and web sites are sluggish and mail delivery is slow. The storage array is still working to incorporate the replacement disk and so its performance is degraded - and that affects everything which stores data there.

There may be brief service interruptions (of up to five minutes) if I decide to shift load to another server.