Dell Powerstore

---
name: dell-powerstore
description: "Dell PowerStore all-flash unified storage: PowerStoreOS, T-Series/X-Series hardware, AppsON, Metro Volume, inline data reduction, VMware vVols/VAAI integration, CSI driver, and migration from Unity/VNX. Use for \"PowerStore\", \"PowerStoreOS\", \"Dell PowerStore\", \"AppsON\", \"Metro Volume\", \"PowerStore T\", \"PowerStore X\", \"PowerStore migration\", \"PowerStore replication\", \"PowerStore CSI\"."
license: MIT
---

# Dell PowerStore

This skill covers Dell PowerStore all-flash unified storage running PowerStoreOS 4.x, including:

- Hardware: T-Series (storage-only) and X-Series (AppsON with embedded ESXi), QLC models (3200Q, 5200Q)
- Container-based software architecture with NDU capability
- Always-on inline data reduction (dedup + compression, 5:1 guarantee)
- Metro Volume: active/active synchronous replication (zero RPO/RTO, 96 km, block and file)
- Native async replication over Ethernet and Fibre Channel
- VMware integration: VASA 3.0/4.0, vVols 2.0, VAAI, AppsON compute
- CSI Driver for Kubernetes (csi-powerstore, iSCSI/FC/NFS/NVMe)
- Protection policies: snapshots, secure snapshots, replication rules
- Performance policies (High/Medium/Low) and volume groups
- Migration from Unity XT and VNX via Universal Import
- PowerStore Manager GUI, REST API, Ansible, Terraform, PowerShell SDK

For cross-platform storage questions, see the `overview` skill.

## How to Approach Tasks

1. **Classify** the request:
   - **Troubleshooting** -- Load `references/diagnostics.md` for performance monitoring, SupportAssist, alerts, connectivity issues, health checks
   - **Architecture / design** -- Load `references/architecture.md` for T/X models, AppsON, NVMe architecture, Metro Volume, replication, CSI, VASA/VAAI
   - **Best practices** -- Load `references/best-practices.md` for volume provisioning, performance policies, data protection, VMware integration, migration

2. **Identify PowerStoreOS version** -- Key version-gated features:
   - 4.0: 5:1 DRR guarantee, QLC (3200Q), Metro for Windows/Linux, file sync replication
   - 4.1: MFA/CAC, file QoS, ML proactive support, secure snapshots for file
   - 4.2: FC async replication, 5200Q, Entra ID SSO, auto-repair, anomaly detection
   - 4.3: 30 TB QLC (2PBe/2U), FC sync replication, metro file, NFSv4.2, multiparty authorization

3. **Load context** -- Read the relevant reference file for deep technical detail.

4. **Recommend** -- Provide actionable guidance using PowerStore Manager, REST API, or CLI.

## Core Architecture

### Hardware

| Series | CPU/RAM Split | Use Case |
|---|---|---|
| T-Series | 100% to storage | Maximum storage performance |
| X-Series (AppsON) | 50/50 storage/compute | Edge, branch, co-located databases |
| QLC models (3200Q, 5200Q) | 100% to storage | Cost-optimized capacity expansion |

Up to 4 appliances per federated cluster. Dual-controller active-active per appliance. All-NVMe base enclosure. PowerStoreOS 4.3: 30 TB QLC drives, up to 2 PBe per 2RU.

### Always-On Data Reduction
Inline dedup + compression on every write. Cannot be disabled. 5:1 guaranteed (PowerStore Prime, no pre-assessment). Dell ships replacement drives if ratio not achieved.

### Metro Volume
Active/active synchronous replication. Zero RPO/RTO. Up to 96 km / 5ms RTT. Witness component prevents split-brain (3.6+). Supports ESXi, Windows, Linux (4.0+), and NAS file systems (4.3+).

### Data Protection Hierarchy
1. Secure snapshots (ransomware-proof, retention-locked)
2. Native async replication (IP or FC, RPO minutes)
3. Metro Volume / Metro File (zero RPO, <96 km)
4. Integration with PowerProtect Data Manager for backup

### Critical Operational Knowledge
- **bond0 restriction**: Ports 0/1 on 4-port NIC reserved for internal node communication. Do not use for direct-attached iSCSI/NVMe TCP hosts.
- **Performance policies**: High/Medium/Low govern I/O priority during contention only. Assigning High to everything eliminates differentiation.
- **Volume Groups**: Write-order consistency on Volume Groups requires all member volumes on the same appliance.
- **SupportAssist**: Direct Connect discontinued Dec 2024. All clusters require Secure Connect Gateway (SCG).
- **Pre-upgrade**: Always run health check package before NDU. Never upgrade with active Critical/Major alerts.

## Reference Files

- `references/architecture.md` -- T/X models, AppsON, NVMe architecture, inline data reduction, Metro Volume, native replication, CSI driver, PowerStore Manager, VASA/VAAI
- `references/best-practices.md` -- Volume provisioning, performance policies, data protection, VMware integration, migration from Unity/VNX
- `references/diagnostics.md` -- Performance monitoring, SupportAssist, alert management, health checks, connectivity troubleshooting