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Error: "Not enough server storage is available to process this command."

The solution is in an obscure parameter known as IRPStackSize. IRP stands for Input/Output Request Packet. This packet contains specially formatted data that device drivers use to communicate with each other deep within Windows' core, or kernel. A "stack" in this context is a kind of scratchpad memory used by the operating system. Thus IRPStackSize determines how much scratchpad memory is set aside to handle IRPs.
In small networks, you normally don't have to worry about IRPs. The default IRPStackSize is 15, and that's plenty of space for typical operations. But some software can use up the available space in the stack. When one too many IRPs come in, whatever input/output operation was going on screeches to a halt and you get the error message "Not enough server storage is available to process this command" or "Not enough memory to complete transaction."
Microsoft specifically fingers Symantec's Norton Antivirus in Knowledge Base article 177078, which refers specifically to IRP stack space running out.
Both Microsoft and Symantec focus on Norton Antivirus, but a general Web search reveals that many users also associate this error with Symantec's Norton Ghost.

Edit the Registry to increase IRPStackSize

Open the Registry Editor (Regedit) and navigate to the following key:

HKEY_LOCAL_MACHINE \ System \ CurrentControlSet \ Services \ LanmanServer \ Parameters

Figure 1. The Registry (click photos to enlarge). Editing the Registry is the only way to get around the networking problem caused by Symantec software. Here we've created a new blank DWord and are about to type in the name: IRPStackSize.

Open the Parameters folder and left-click once in an empty portion of the right pane. If IRPStackSize is already shown under Name in the right-hand pane, double-click it, select Decimal and increase the value shown in the Value data by at least three. (More on this in a moment.)

The odds are that IRPStackSize won't even appear in the right pane. This means Windows is operating purely on its internal default settings for IRPStackSize. In this case, point to Edit/New, and then click DWord Value. Enter IRPStackSize as the new value in the right-hand pane. (The name is case-sensitive; enter it exactly as shown.) Right-click on the entry you just created and select Modify. Then select Decimal and, in the Value Data box, enter the number you want. (See below.) Close the Registry and reboot. See if the problem is resolved.

What size should you specify? The default value is 15, but you can go as high as 49, if you need to. (Technically, you can go all the way to 50, but Microsoft says using the maximum value may cause more problems, so it's best to stay south of that maximum.) Raising the IRPStackSize to 25 solved the problem on Franz's system.

If 25 doesn't work for you, a little trial and error may be necessary to get things right for your setup. Just keep bumping the number up until you no longer see the error message.
Source: Fred Langa - Langalist   http://WindowsSecrets.com
 


 

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