I recently had to upgrade storage in my always on machine. I moved some files onto the bigger drive and shared out the folders. The drives are mirrored and hold my photos and my wife’s graduate homework, etc. For a while they worked fine, after a while though, I couldn’t access the shares over my network and received the following error: “Not enough server storage is available to process this command.”

A quick search, with multiple results led me to an article such as found here. I thought I remembered reading in one of the search results that in some instances could be a result of drive size. A lot more also reference Norton, which I haven’t used since the late 90s.

Either way, the quick fix, was to do the registry edit, restart the machine, and all was well.

• Click Start, click Run, type regedit, and then click OK
• Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters

• Click Edit, point to New, and then click DWORD Value
• Type IRPStackSize, and then press Enter to name the value
  (Note: Type IRPStackSize exactly as it is displayed. This is case sensitive.)
• Click Edit, and then click Modify
• In the Data Value box, type 30 (Decimal) or any value max of 50, and then click OK
• Restart the Server service on the computer sharing the resource