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Express5800/ft series servers Product Information

Fault-Tolerant General Purpose Servers. Express5800/ft series servers Product Information. Express5800/ft Series Servers High Availability Technologies. Approaches to Reliability and Availability. Select and combine hardware and software technologies for availability.

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Express5800/ft series servers Product Information

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  1. Fault-Tolerant General Purpose Servers Express5800/ft series serversProduct Information

  2. Express5800/ft Series ServersHigh Availability Technologies

  3. Approaches to Reliability and Availability • Select and combine hardware and software technologies for availability Higher availability of a single server FT server + cluster Redundant hardware (dual modular architecture) • Continuous operation despite of hardware failures. • Simplified installation and operation FT server cluster Fault tolerant server Enhance fault tolerance of the hardware Single server (Typical servers) Cluster software Enhance availability of the system Partially redundant hardware(e.g. HDD, PSU) • Enhanced HW/SW failure resilience • For Large scale system with scalable • nodes etc. Failover across multiple servers Higher availability of the system Select the best availability solution according to system requirements

  4. FT Server and Cluster Solution Comparison Fault tolerant server Cluster system Aim High availability of a single server Achieve availability / scalability / load balancing Technology Lockstep (CPU&MEM) and Failover (I/O) (Synchronized in normal conditions) Failover Load balancing Failover process Failure Failover Failure CPU CPU Isolation EXPRESSCLUSTER Memory Memory Failover to other servers Isolate faulty component HDD HDD Continuous operation (no interruption) Service during failure Operation is interrupted for failover process (some several minutes to 10 minutes) Resilience Hardware failures Hardware/ Software failures Performance enhancement Add CPU or node. Supports servers with 4 or more sockets Add CPU Supported apps General applications No modifications needed Failover settings is required for each app. (creation of script batch files) • Features load balancing as well as availability • Software failure-resilient • Suitable for large-scale systems (scalable nodes) • System configuration requires no app modifications • Continuous operation without interruption • Ideal for 24-7 systems, email and Web servers ft servers provide hardware availability and can be installed quick and easily Ft servers + EXPRESSCLUSTER solution takes advantage of both solutions

  5. Recovery Process from HW Failures Express5800/ft series server Continuous operation Recovery complete Failure Non-stop service In service In service In service 1. Instantaneous isolation of the faulty module 2. Resynchronization after replacement Module #0 Isolated faulty model Processing Lockstep Replacement of faulty module Processing Processing Module #1 Cluster system Start failover process Failover complete Failure System down for a few mins to 10 mins In service Service Intermittence Restart service 3. Takeover of cluster resources (e.g. NW settings and disks) (a few secs to 1 min) 4. Restart apps (a few secs to a few mins) 2. Determine failover host (a few secs to 1-2 mins) 1. Interruption (a few secs) Repair / Replace Failover

  6. Express5800/ft Series ServersOptional Features to Increase Fault Tolerance

  7. Express Report Service Support • Isolate the failed components to continue operation. • Monitor hardware status at the service center. • Support the system proactively to ensure continuous availability. Express Report Service Only the alert information will be sent out with dedicated software (secure environment) Hardware monitoring & detection ② ① Failure Isolation CPU CPU CPU CPU Mem Mem Client Mem Mem Via the internet (mail server) public line (modem connection) HDD HDD HDD HDD Continuous Operation Alert Notification Recovery ③ Replace ④ NEC (monitoring center) CPU CPU CPU CPU NECService Center Mem Mem Mem Mem HDD HDD HDD HDD Notification

  8. Support for Redundant Peripheral Devices Peripheral Devices • Selection of LTO or DAT and support for redundant backup*◆ Double backup configuration is supported to provide for failures during backup◆ LTO or DAT drives are offered for selection ft series • Data is output from each module to achieve backup redundancy • Both backups are created almost simultaneously Module #1 Backup device SAS Controller Module #2 Backup device SAS Controller * Configuration of standalone backup is also supported • A two UPS configuration provides tolerance against UPS defects* ft series • Connecting each UPS to separate power sources helps avoid being affected by failures of the power sources Module #1 ＵＰＳUninterruptable power supply PSU Module #2 ＵＰＳUninterruptable power supply PSU * Single UPS configuration is also supported.UPS is controlled through the network

  9. Apps OS Apps OS Module #0 Module #1 Module #0 Module #1 Hardware failure ft series server ft series + EXPRESSCLUSTER for Higher Availability Enhancement SW • Clusters with ft servers enhance both HW and SW availability Software failure EXPRESSCLUSTER Failover to secondary server EXPRESSCLUSTER monitors SW ft server (secondary) ft server (primary) Highest level of availability suitable for critical systems

  10. Benefits of ft Series + EXPRESSCLUSTER Enhancement SW • Clusters using ft servers deliver the benefits of both solutions Legend: ★★★: Excellent, ★★☆: Good, ★ ☆ ☆: Fair

  11. Apps Apps Guest OS Guest OS Module #0 Module #1 Hardware failure ft server ft server + Hyper V + EXPRESSCLUSTER Enhancement SW • Clusters configured on Hyper-V on an ft server Software failure EXPRESSCluster EXPRESSCluster monitors SW In the event of a SW failure, the operation fails over to another guest OS Hyper-V™ 2.0 ft series server High HW and SW availability for virtualized environments

  12. ExpressCluster X SingleServerSafe Enhancement SW • SW is monitored on the ft server to automatically restart the SW in the event of a failure. ◆ SingleServerSafe (SSS) monitors the server and SW status at all times. 　 ◆ In an event of a failure, SSS restarts the service, process, OS etc. to resume operation. 　 ◆ The ft server and SSS in tandem can handle both HW and SW failures • By enabling failure detection and restart/reboot, SSS helps handle a wide range of failures with a single server • By using the optional monitoring function of EXPRESSCluster, SSS is capable of further detailed monitoring including the detection of stalling in data bases. Service Process Restart Restart Apps SingleServerSafe OS Reboot SW availability can be improved even for a single ft server

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