HP MSA70 HP StorageWorks 70 Modular Smart Array Enclosure User Guide (434893-0 - Page 25
Level of Protection, Connection Method, you can eliminate downtime caused by power-related failures. - cabling guide
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To protect the system from power-failure-related downtime, each disk enclosure ships standard with a redundant power supply. Depending how you connect the power supplies to the power source, you can eliminate downtime caused by power-related failures. Connection Method Disk enclosure power supplies connected to: one power source Disk enclosure power supplies connected to: two separate power sources Disk enclosure power supplies connected to: two UPS two separate power sources Level of Protection Protects you from downtime when one of the disk enclosure power supplies fails. The remaining power supply/fan module can operate the disk enclosure until you install a replacement module. Protects you from downtime when one of the disk enclosure power supplies fails. Protects you from data loss when one of your power sources fails, due to a pulled cable or tripped breaker. The remaining power source can power the disk enclosure until the failed power source is restored or relocated. Depending on the cause and duration of the power outage, you can use this time to properly shut down your storage sub-system. Protects you from downtime when one of the disk enclosure power supplies fails. Protects you from data loss when one or both of your power sources fails, due to a pulled cable, tripped breaker, or local power outage. The remaining power source or the UPS will power the disk enclosure until power is restored to the source. Depending on the cause and duration of the power outage, you can use this time to properly shut down your storage sub-system. 70 Modular Smart Array User Guide 25