3Ware 9550SXU-12 User Guide - Page 28
Monitoring, Maintenance, and Troubleshooting Features, SAS drives. For details
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Introducing the 3ware® SAS/SATA RAID Controller • 3ware CLI (Command Line Interface) The 3ware CLI provides the functionality available in 3DM through a Command Line Interface. You can view unit status and version information and perform maintenance functions such as adding or removing drives, and reconfiguring RAID units online. You can also use it to remotely administer controllers in a system. The 3ware CLI is described in 3ware SAS/SATA RAID Controller CLI Guide and in the 3ware HTML Bookshelf. Monitoring, Maintenance, and Troubleshooting Features Several 3ware RAID controller features aid in monitoring and troubleshooting your drives. • Drive Performance Monitoring (DPM). DPM is an advanced troubleshooting tool used to measure drive performance, and to help identify when a specific drive is causing problems so that you can repair or replace it. Commands are available through the 3ware CLI to enable and disable DPM, and to see a range of different statistics. These statistics can be useful to AMCC technical support to help you troubleshoot problems with your RAID controller and units. For more information, see "Drive Performance Monitoring" on page 253. • SMART Monitoring (Self-Monitoring, Analysis and Reporting Technology) automatically checks a disk drive's health every 24 hours and reports potential problems. This allows you to take proactive steps to prevent impending disk crashes. SMART data is checked on all disk drives (array members, single disks, and hot spares). Monitoring of SMART thresholds can be turned on and off in 3DM. See, "Selecting Self-tests to be Performed" on page 178 This feature does not apply to SAS drives. (For details, see "Viewing SMART Data About a Drive" on page 157.) • Staggered Spinup allows drives that support this feature to be poweredup into the standby power management state to minimize in-rush current at power-up and to allow the controller to sequence the spin-up of drives. Both SATAII OOB and ATA spin-up methods are supported. The standby power management state is persistent after power-down and power-up. You can set the number of drives that will spin up at the same time, and the time between staggers in 3BM (the 3ware BIOS Management utility). This feature does not apply to drives that are attached to an expander. For details, see "Enabling and Setting Up Staggered Spin-up" on page 95. 16 3ware SAS/SATA RAID Software User Guide, Version 9.5.1