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BK763A
HP 6Gb/s SAS BL Switch
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BK763A is a high-performance enterprise switch built on a robust modular architecture that ensures optimal scalability and performance for growing network environments. The device offers multiple power options with an AC power supply and redundant power support, enabling reliable operation in mission‐critical applications.
The switch features a comprehensive range of ports including 24 Ethernet ports with additional SFP uplink slots for flexible connectivity. Designed for seamless stacking and scalable network expansion, BK763A is ideal for mid-sized enterprise deployments requiring high throughput, efficient management, and advanced Layer 2/Layer 3 capabilities.
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In a VMware ESXi blade cluster serving 200+ virtual machines, IT teams deploy the BK763A-HP 6Gb/s SAS BL Switch to provide low-latency, high-throughput connectivity between blade servers and centralized SAS JBOD arrays. The result is predictable IOPS performance for mission-critical VMs, seamless vMotion migrations and reduced storage bottlenecks, delivering up to 40% better VM density and 25% faster provisioning times.
A global enterprise consolidates four disparate SAN islands into a unified SAS fabric using the BK763A-HP 6Gb/s SAS BL Switch across 16 HP blade enclosures. This implementation achieves simplified storage management through a single pane of glass, increases utilization of existing disk assets by 30%, and lowers capital expenditure by decommissioning redundant controllers—all while maintaining sub-100µs latency.
A tier-1 financial institution integrates the BK763A-HP 6Gb/s SAS BL Switch into its backup cluster to stream transaction logs and full volume snapshots to offsite SAS targets. With end-to-end 6Gb/s bandwidth and native multipathing, backup windows shrink from eight hours to under two hours, recovery point objectives (RPOs) improve to 15 minutes, and compliance SLAs for critical data retention are consistently met.
To get the detailed certification, please go to the Compliance Center.
| Depth | 12 inches | 12 inches | 11 inches | 12 inches | 14 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 256 MB | 64 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1 inches | 1.75 inches | 1 inches | 1 inch |
| IOS | LAN Base | IP Services | IP Services | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | BK763A | AJ821C | 787635-B21 | AK242B | QW939A |
| Media Type Supported | Combo | Combo | Twisted Pair / Fiber / Combo | Combo | Combo |
| Memory | 256 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 24 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | POE+ | POE+ | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | 24 Ethernet ports with 4 SFP uplink slots | 24 Ethernet ports, 4 SFP uplink ports | 2 expansion slots available | N/A | 24 Gigabit Ethernet ports, 4 SFP uplink ports |
| Power Consumption | 85W | 120W | 350 W | 120W | 150 W |
| Power Source | AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | BK763A High-Performance Enterprise Switch | AJ821C Network Switch | Enterprise Stackable Switch 787635-B21 | AK242B Enterprise Network Switch | Enterprise 48-Port Stackable Switch QW939A |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | Yes | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 128 Gbps | 128 Gbps | 80 Gbps | 128 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 256 Gbps | 256 Gbps | 160 Gbps | 256 Gbps | 256 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 10G | 10G |
| Weight | 12 lbs | 8 lbs | 12 lbs | 15 lbs | 15 lbs |
| Width | 17.5 inches | 17 inches | 17.5 inches | 17 inches | 17 inches |
SAS blade switch worked reliably in enclosure.
Stable connectivity for internal storage.
Easy to integrate into blade chassis.
Consistent performance with no errors.
Dependable SAS switching.
The HP 6Gb/s SAS BL Switch (BK763A) is a high-performance serial-attached SCSI switch designed for HP BladeSystem c-Class enclosures, providing 6 Gb/s connectivity for server-to-storage interconnects.
The BK763A SAS BL Switch is fully compatible with HP BladeSystem c7000 and c3000 enclosures, supporting server blades that require external 6 Gb/s SAS connectivity.
The BK763A features eight internal 4-lane 6 Gb/s SAS ports for server blades and eight external 4-lane 6 Gb/s SAS ports for storage targets, all using Mini-SAS SFF-8088 connectors.
Key features include 6 Gb/s throughput per lane, full SAS-2 compliance, integrated expander, redundant-capable design, hot-swappable modules, and centralized management for simplified storage expansion.
Each SAS lane delivers up to 6 Gb/s, enabling aggregate throughput of up to 192 Gb/s across all internal and external ports for low-latency, high-bandwidth storage traffic.
Slide the BK763A switch into an available interconnect bay of the c3000 or c7000 chassis, connect server blade SAS mezzanine cards to the internal ports, then power on and verify status LEDs.
Connect external storage arrays using Mini-SAS SFF-8088 to SFF-8088 or SFF-8088 to SFF-8482 cables rated for 6 Gb/s to ensure full performance and signal integrity.
Manage the BK763A via HP Onboard Administrator or HP OneView for firmware updates, health monitoring, event logging, and configuration of SAS topology parameters.
Yes. Use HP Onboard Administrator or HP OneView to upload the latest switch firmware package, schedule a maintenance window, and apply updates without disrupting active I/O.
The BK763A supports hot-swappable modules and dual-sided interconnect bays in c7000 chassis for redundant power and I/O paths, ensuring no single point of failure.
The BK763A is compatible with any SAS-2 or SAS-3 compliant storage array, including HP MSA, EVA and third-party SAS arrays, when connected via 6 Gb/s Mini-SAS links.
The HP 6Gb/s SAS BL Switch consumes up to 25 W and operates between 5 °C and 40 °C with front-to-back airflow; ensure chassis power supplies and cooling meet these requirements.
HP offers a one-year limited warranty with next-business-day hardware replacement and optional HP Care Pack services for extended coverage and global support.
Compared to 3 Gb/s switches, the BK763A delivers double the per-lane data rate, improved signal integrity, backward compatibility with legacy drives and higher aggregate throughput.
Ideal for I/O-intensive applications, database clusters, virtualization, backup and archive servers requiring high-bandwidth, low-latency access to shared SAS storage.
Use the operating system’s SAS multipath driver (such as Windows MPIO or Linux DM-MPATH) alongside redundant SAS HBA links to aggregate and fail over paths.