NEC Express 5800 Series User Manual

Also see for Express 5800 Series: Maintenance Guide User guide User guide Installation guide

Contents

SSA graphical user interface 34To perform the operation, you must meet the following conditions: The destination array must have the same number of physical drives as the source or original array. Both the source and destination arrays must be in OK state. All existing logical drives in the source array must be in OK state. The destination array must have sufficient capacity to hold all logical drives present in the source array.Encryption ManagerThis task is not supported.Managing modesThis task is not supported.Power modesThere are three available power modes: Maximum performance Minimum power BalancedMaximum performance (default)This is the default setting. All settings are selected based on maximum performance. Power savings optionsthat affect performance are disabled.BalancedYou can use this setting to save power with minimal effects on performance. For large queue depths, thissetting affects throughput by 10% or less.At lower queue depths or infrequent I/O, impacts on performance may be greater. This command is typicallyuseful in environments using only hard drives, and is not recommended when using SSDs.Settings are based on the user configuration, such as the number or types of drives, the RAID level, storagetopology, and so forth. Significant changes to the configuration may require a reboot for optimal settingselection. If a reboot is required to change settings, SSA generates a warning.Minimum powerWhen settings are selected without regard to system performance, maximum power savings is achieved. NECrecommends this setting for very specific applications, but it is not appropriate for the majority of customers.Most applications will suffer significant performance reduction.IMPORTANT: A reboot may be required after switching power modes in order to optimize savingsand performance.IMPORTANT: When the power mode is set to Balanced, future controller configuration changesmay require a reboot for optimal performance.