# S2D Cluster - Server Manager  Data Retrieval Failures Occurred

<span style="white-space: pre-wrap;">If you’ve worked with </span>**Storage Spaces Direct (S2D) clusters**<span style="white-space: pre-wrap;">, you might have run into a frustrating issue in </span>**Server Manager**:

> **Online – Data retrieval failures occurred**

<span style="white-space: pre-wrap;">This message usually shows up under </span>**Manageability**<span style="white-space: pre-wrap;"> for cluster nodes. It doesn’t necessarily mean your cluster is broken, but it does make monitoring painful.</span>

### Why does this happen?

Server Manager uses WinRM (Windows Remote Management) to pull data from cluster nodes. By default, WinRM has a limit on the size of messages it can handle. In an S2D cluster with lots of performance counters and data, that limit can get exceeded — leading to retrieval failures.

### The Fix

Luckily, the solution is straightforward. You just need to increase the WinRM envelope size on your nodes. Run the following PowerShell command:

```powershell
Set-WSManInstance -ResourceURI winrm/config -ValueSet @{MaxEnvelopeSizekb = “700”}
```