IBM Storage Controller Node Canister for Storwize V3700

The IBM 03JK746 is a replacement controller node canister for the IBM Storwize V3700 storage system, providing the compute and I/O processing intelligence that drives Storwize V3700 storage operations — essential for restoring redundant controller operation or replacing a failed node in active V3700 SAN deployments.

Key Features

• IBM-qualified replacement controller node canister for Storwize V3700
• Restores dual-controller redundancy in Storwize V3700 after single controller failure
• Contains all processing, cache, and I/O logic for one Storwize V3700 controller node
• Hot-swap capable — install without powering down the array in redundant configurations
• IBM-validated component ensuring firmware compatibility with Storwize V3700 platforms

Product Specifications

• Part Number: 03JK746
• Manufacturer: IBM
• Component Type: Controller Node Canister
• Compatible System: IBM Storwize V3700
• Controller Role: One of two node canisters in dual-controller V3700 configuration
• Cache: Included (controller cache mirrored between node pairs)
• Hot-Swap: Yes (with redundant partner node active)

Component Specifications

• Host Interfaces: SAS and/or iSCSI (model configuration dependent)
• Drive Interface: SAS 6Gb/s backplane connectivity
• Cache: Mirrored write cache (protected by partner node)
• Battery: Supercapacitor or battery-backed cache protection
• Management: IBM Spectrum Virtualize (SVC-based)
• Failover: Automatic non-disruptive controller failover

Use Cases

• Replacing a failed controller node canister in IBM Storwize V3700 to restore HA redundancy
• Preventive controller canister replacement during scheduled maintenance windows
• Spare controller stocking for IBM Storwize V3700 environments with SLA requirements
• Restoring full dual-controller performance after single-node degraded operation

Compatibility

• IBM Storwize V3700 only — not compatible with V5000 or V7000 (see 03JK747 for V5000)
• Managed via IBM Spectrum Virtualize management GUI and CLI
• IBM Storage Insights monitors node canister health and alerts on degraded states
• Verify Storwize V3700 firmware compatibility with IBM before replacement

Frequently Asked Questions

Can I replace a Storwize V3700 controller canister without shutting down the array?

Yes — with the partner node canister active and healthy, the 03JK746 supports hot-swap replacement without interrupting I/O to hosts. Always follow IBM's node canister replacement procedure to ensure non-disruptive operation.

What is the difference between 03JK746 and 03JK747?

The 03JK746 is qualified for IBM Storwize V3700, while the 03JK747 is qualified for IBM Storwize V5000. The two are not interchangeable — always verify the target system before ordering.

Does the 03JK746 include cache memory?

Yes — the controller node canister includes integrated cache memory. Cache data is mirrored between the two node canisters in a dual-controller configuration, ensuring no data loss during a single canister failure or replacement.

The IBM 03JK746 controller node canister is the critical replacement component for maintaining dual-controller redundancy and full performance in IBM Storwize V3700 environments — ensuring SAN availability and protecting against single points of failure in production storage infrastructures.