dd_create_storage_unit · Ppdm MCP: Risk & Policy

WHAT IT DOES

What dd_create_storage_unit does on Ppdm

AI agents use dd_create_storage_unit to create or update resources in Ppdm — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ppdm environment.

WHY IT NEEDS A POLICY

Why dd_create_storage_unit needs a policy

This tool creates a new storage unit, which is a reversible write operation that modifies the Data Domain infrastructure. While it doesn't delete data, creating storage units can consume capacity, affect storage topology, and potentially impact backup operations if misconfigured.

From the tool's definition Tool name 'dd_create_storage_unit' and description 'Create a new DDBoost storage unit on Data Domain' explicitly indicate creation of a new storage resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

dd_create_storage_unit Rate-limited

dd_create_storage_unit stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "dd_create_storage_unit": {
      "limits": [
        {
          "counter": "dd_create_storage_unit_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Ppdm, so you can run agents against it safely.

FAQ

Questions about dd_create_storage_unit

What does the dd_create_storage_unit tool do? +

Create a new DDBoost storage unit on Data Domain. It is categorised as a Write tool in the Ppdm MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on dd_create_storage_unit? +

Register the Ppdm MCP server in PolicyLayer and add a rule for dd_create_storage_unit: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Ppdm. Nothing to install.

What risk level is dd_create_storage_unit? +

dd_create_storage_unit is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit dd_create_storage_unit? +

Yes. Add a rate_limit block to the dd_create_storage_unit rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block dd_create_storage_unit completely? +

Set action: deny in the PolicyLayer policy for dd_create_storage_unit. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides dd_create_storage_unit? +

dd_create_storage_unit is provided by the Ppdm MCP server (moodswing9/ppdm-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

dd_create_storage_unit is one line of Ppdm's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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