HPE S7U40A Storage 128GB 48-PORT 64GB Short Wave Integrated Fibre Channel Switch Blade

HPE S7U40A 48-Port 64GB Short Wave Integrated Fibre Channel Switch Blade

Overview

The HPE S7U40A is a 48-port, 64GB Short Wave Integrated Fibre Channel Switch Blade designed for high-density SAN environments where consolidating storage connectivity inside the chassis matters more than adding external switching infrastructure. If you're managing a growing storage networking fabric across blade server enclosures, this blade eliminates the external FC switch tier — port count and latency both improve when the switching logic lives inside the enclosure itself.

At 14.33 lb, the S7U40A is a substantial blade-format component — plan rack and enclosure weight budgets accordingly before slotting it into your infrastructure refresh.

Key Features

• 48 Fibre Channel Ports: 48 ports in a single blade means you can connect a dense population of server HBAs and storage targets without exhausting a separate external switch. For enclosure-heavy deployments, this port density directly reduces the number of discrete FC switches you need to purchase, rack, power, and manage.
• 64GB Short Wave FC: 64Gb/s per-port FC bandwidth is the current high-end for Fibre Channel — relevant when NVMe-oF or all-flash arrays are on the storage side and you need the fabric to stop being the bottleneck. Short Wave (SW) optics operate over multimode fiber, which is the standard for within-datacenter runs; verify your fiber plant is multimode OM3/OM4 before deploying.
• Integrated Blade Form Factor: Built to slot directly into an HPE blade enclosure, the integrated design removes external cabling between the server blades and the FC fabric. Fewer cable runs means lower failure surface area and cleaner airflow through the enclosure.
• 128GB Aggregate Capacity Reference: The 128GB designation in the product title reflects the aggregate switching capacity of the blade — meaningful when planning fabric utilization across all 48 ports under concurrent load.
• Ethernet Interface: Management connectivity is presented over Ethernet, consistent with HPE blade infrastructure management practices — integrates with existing out-of-band management networks without requiring a dedicated management switch port.
• Commercial-Grade Build: At 14.33 lb, this is a purpose-built datacenter component — not a lightweight edge device. The weight reflects the hardware density expected in enterprise SAN infrastructure.

Integration and Compatibility

The S7U40A is designed for integration within HPE blade infrastructure — confirm enclosure compatibility with your HPE account team or HPE's online configurator before ordering, as FC switch blades are enclosure-specific. Short Wave optics require multimode fiber; if your datacenter fiber plant is single-mode, you will need to address that before deployment. Management over Ethernet aligns with standard HPE Onboard Administrator and Virtual Connect management workflows. For broader SAN switching context, review your zoning and fabric architecture before adding blade-based FC switching to an existing fabric — improper zoning on a new high-port-count blade can propagate across the entire SAN.

Frequently Asked Questions

Q: What fiber type does the HPE S7U40A require?

A: The S7U40A uses 64GB Short Wave (SW) Fibre Channel optics, which require multimode fiber — typically OM3 or OM4 for datacenter distances. Single-mode fiber is not compatible with Short Wave optics.

Q: How many Fibre Channel ports does the S7U40A provide?

A: The S7U40A provides 48 Fibre Channel ports in a single integrated blade, enabling high-density SAN connectivity without an external switch chassis.

Q: What enclosures is the S7U40A compatible with?

A: The S7U40A is designed for HPE blade enclosures. Confirm specific enclosure compatibility with HPE's configurator or your HPE reseller channel before purchasing — FC switch blades are not universally cross-compatible across all HPE enclosure generations.

Q: What is the management interface on the S7U40A?

A: Management connectivity is via Ethernet, consistent with HPE blade enclosure management architecture (Onboard Administrator).

Q: What does the 128GB designation mean for the S7U40A?

A: The 128GB figure refers to the aggregate switching capacity of the blade across its port population, not onboard storage. It reflects the total fabric bandwidth available when the blade is fully utilized.

Karl Wilson

The S7U40A's 48-port count at 64Gb Short Wave is the specification that matters most in a blade consolidation project — at 64Gb per port, the FC fabric stops being the bottleneck between NVMe-oF arrays and compute blades, which is where I see most SAN architects focus their refresh attention right now.

Technical Highlights:

• 48 FC Ports, Blade-Integrated: 48 ports inside the enclosure eliminates a full external FC switch chassis in many mid-scale deployments — that's power, rack U, and one fewer management plane to maintain.
• 64Gb Short Wave: Short Wave optics mean multimode fiber — within a single datacenter row or pod, OM4 runs are cost-effective and hit the distances needed. This is not a cross-campus fabric option.
• Ethernet Management: Management over Ethernet slots cleanly into HPE Onboard Administrator workflows — no out-of-band management network redesign required when adding this blade to an existing enclosure.

Deployment Considerations:

• Verify enclosure slot compatibility before procurement — HPE FC switch blades are generation-specific and not hot-swappable between enclosure families.
• At 14.33 lb, this blade adds meaningful weight to the enclosure; confirm your rack and floor load ratings, particularly in older datacenter builds, before installing.

The S7U40A is the right fit for an HPE blade datacenter that is consolidating SAN switching inside the enclosure to reduce external infrastructure — particularly in NVMe-oF or all-flash array environments where 64Gb fabric bandwidth eliminates a common performance ceiling.