This
6U CompactPCI® board is designed for redundant processing configurations where
very high levels of system availability are required. Its architecture is
tailored for demanding applications such as servicing the telecom network and
the Internet.
The ZT 5551 High Availability Processor Board supports up to 12 CompactPCI peripheral boards, and when used in conjunction with a second ZT 5551 can provide 99.999 percent (five-nines) availability.
It features a 1GHz Intel® Pentium® III processor, is hot-swappable and includes several onboard peripherals and optional I/O expansion features.
The ZT 5551 can operate alone or in a dual-redundant configuration. Dual ZT 5551s can provide 99.999 percent availability as system masters, when used with a supporting high availability (HA) CompactPCI backplane. In this configuration, the two ZT 5551 boards operate in an active/hot standby mode with only one of the two boards active on the watchdog timeouts, which can cause a switchover to the standby CPU board. A dedicated Ethernet channel between CPUs provides an application with a software synchronization mechanism across the HA backplane.
Dual ZT 5551 boards can also be configured to run in active/active mode. In this configuration, each bus segment is controlled independently by each of the boards. Should either CPU board go out of service, the other can take control of the entire backplane without interruption of service. The two ZT 5551s and their associated CompactPCI slots may also be operated as a PC cluster without bus segment failover, using standard operating clustering features.
The ZT 5551 communicates with up to 12 CompactPCI peripheral boards through two peer-transparent 64-bit bridges, allowing optimum peripheral performance.
Interrupt routing and configuration options are all accessible through BIOS set up screens, which can be configured locally at boot time. The ZT 5551 also supports the PICMG 2.9 Intelligent Platform Management Interface (IPMI) specification, which allows for remote, comprehensive management capabilities such as on-board temperature and voltage monitoring.
The ZT 5551 features a single 1GHz Low Voltage Intel® Pentium® III processor supporting a 133MHz Front Side Bus. It also contains integrated 512KB L2 cache and supports up to 2GB of PC133 SDRAM with ECC. The ZT 5551 also has integrated video with 2MB SDRAM.
There is 16MB of onboard Flash to support the field-upgradeable system BIOS. The base board also supports a single 2.5" IDE HDD or an optional CompactFlash carrier. Dual 10/100/1000 Ethernet interfaces deliver high-performance networking.
There are several I/O expansion configurations that can support additional peripheral devices:
One year
The ZT 5551 is compliant with the following specifications:
| Power Req. (Typical) | Single 1GHz, 1GB SDRAM
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| Environmental | Required airflow: 250 linear feet per minute Operating Temperature: 0° C to 45° C Storage Temperature: -40° C to +85° C Non-condensing relative humidity: less than 95% at 40° C |
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| Peripherals and I/O Interfaces |
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| Regulatory Compliance | Designed for NEBS Level 3 and ETSI CE Certification
The ZT 5551 meets intent of Directive 89/336/ECC for Electromagnetic Compatibility and Low-Voltage Directive 72/23/ECC for Product Safety. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities: Safety
Emissions Test Regulations
EN 50081-1 Emissions
EN 50024 Immunity
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The ZT 5551 is compliant with the following specifications: