Installation guide

Chapter 4. Web Browser-Based Configuration
83
No Truncation: It does not truncate the capacity.
4.8.2 Hdd Power Management
The “HDD Power Management” allow you to choose a “Stagger Power On Control”,
“Low Power Idle”, “Low RPM” and completely “Spins Down Idle HDD”. It is designed
to reduce power consumption and heat generation on idle drives.
4.8.2.1 Stagger Power on Control
Normally RAID system’s redundant power can supply enough power to spin up both
drives simultaneously. Using special HDDs that startup current from spinning up the
drives all at once can overload the power supply, causing damage to the power
supply, disk drives and other system components. This damage can be avoided by
allowing the host to stagger the spin-up of the drives. The SAS/SATA drives have
support staggered spin-up capabilities to boost reliability. Staggered spin-up is a very
useful feature for managing multiple disk drives in a storage subsystem. It gives the