IBM Storage Controller Node Canister for Storwize V5000

The IBM 03JK747 is a replacement controller node canister for the IBM Storwize V5000 storage system, delivering the I/O processing, cache, and host connectivity intelligence for one of the two Storwize V5000 controller nodes — critical for restoring dual-controller high availability after a controller failure in production IBM SAN environments.

Key Features

• IBM-qualified replacement controller node canister for Storwize V5000
• Restores dual-controller redundancy and full array performance after node failure
• Higher performance profile than V3700 canister (03JK746) — V5000 platform-specific
• Hot-swap installation with partner node active for non-disruptive replacement
• Managed via IBM Spectrum Virtualize for unified storage operations

Product Specifications

• Part Number: 03JK747
• Manufacturer: IBM
• Component Type: Controller Node Canister
• Compatible System: IBM Storwize V5000
• Controller Role: One of two node canisters in dual-controller V5000 configuration
• Cache: Included (mirrored between paired node canisters)
• Hot-Swap: Yes (with redundant partner node active)

Component Specifications

• Host Interfaces: iSCSI, FC, FCoE (configuration dependent)
• Drive Interface: SAS 6Gb/s or 12Gb/s backplane (model dependent)
• Cache: Mirrored write cache protected by partner node
• Cache Protection: Supercapacitor or battery-backed
• Management: IBM Spectrum Virtualize GUI, CLI, REST API
• Failover: Automatic transparent I/O failover to partner node

Use Cases

• Replacing a failed Storwize V5000 controller node to restore HA and full throughput
• Upgrading a single-controller V5000 to dual-controller for high-availability operation
• Spare controller canister stocking for IBM V5000 environments with strict uptime SLAs
• Preventive replacement of aging controller canisters during planned maintenance

Compatibility

• IBM Storwize V5000 only — not compatible with V3700 (03JK746) or V7000
• Managed via IBM Spectrum Virtualize and IBM Storage Insights
• Supports IBM Easy Tier automated storage tiering when fully operational in dual-node
• Verify Storwize V5000 firmware version compatibility with IBM before installation

Frequently Asked Questions

What happens to I/O during a V5000 controller canister replacement?

With multipath I/O configured on hosts and the partner node healthy, I/O continues uninterrupted through the active node during hot-swap replacement. IBM recommends verifying multipath connectivity before initiating replacement.

Does the 03JK747 work in both V5000 models (Control Enclosure and Expansion)?

The 03JK747 is a controller node canister for the V5000 Control Enclosure only. Expansion enclosures do not contain controller canisters — only drive canisters and ESMs.

How does the V5000 protect cache data during a controller failure?

Storwize V5000 mirrors all write cache between both node canisters in real time. If one node fails, the partner node retains a complete copy of all pending write data, preventing data loss during the failure event.

The IBM 03JK747 controller node canister is the definitive replacement component for maintaining Storwize V5000 dual-controller integrity — restoring the high availability, throughput, and Easy Tier tiering functionality that V5000 production environments depend on for continuous, resilient SAN storage operation.