Energy saving technologies of hard disks in the storage system

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Energy saving technologies of hard disks in the storage system:
FAQ-What are the energy saving technologies of hard disks in the storage system

Other related questions:
What are the energy conservation technologies of hard disks in the storage system?
The main energy conservation technology of disks in the storage system is the disk spin-down technology. The storage system houses specific interfaces for application systems to intelligently control the spin-down process of hard disks. Through this technology, the hard disks without I/O requests consume little energy, and the power consumption of hard disks in the whole storage system is efficiently reduced.

What is the pre-copy technology of hard disks?
When a storage system detects that a member disk in a RAID group is to fail, the system copies the data on the member disk to a hot spare disk in advance. In this way, the risk of data loss is reduced. This technology is called pre-copy. The SMART detects a potential disk failure and sends an alarm, and then the pre-copy technology backs up the data on the hard disk onto a hot spare disk in advance. Through this fast backup method, the reconstruction time required after the failure of a hard disk is shortened or even eliminated, and the failure rate of hard disks during reconstruction is also reduced; therefore, the reliability of the storage system is dramatically improved.

S.M.A.R.T technology concept
Self-monitoring, analysis and reporting technology (S.M.A.R.T) is widely used to disks to protect data security. When disks are working, the monitoring system analyzes the states of motors, circuits, disks, and heads. When an exception occurs, an alarm will be generated and automatic speed-down and data backup may be implemented.

Setting the energy saving mode
You can configure energy saving settings on the iBMC WebUI. iMana: http://support.huawei.com/ehedex/pages/DOC1000010818YEE0409N/18/DOC1000010818YEE0409N/18/resources/iMana200/en/rh/help/bmc_help_0063.html iBMC: http://support.huawei.com/ehedex/pages/DOC1000010818YEE0409N/18/DOC1000010818YEE0409N/18/resources/iBMC/en/out/pme_user_r1_r2/SemiXML%28pme_user_all_rh_semi%29/pme_help_v2r2c20/pme_help/bmc_help_0009.html

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