Seagate NAS HDD Specifications
The Seagate NAS HDD is designed for 1-5 bay NAS environments, for larger deployments of more than five bays, the Enterprise Capacity Constellation ES.3 is recommended. NAS HDD's are designed to operate 24x7, and much of the time the drives merely idle. Advanced power spin-down modes reduce the amount of power consumed, and heat generated, by the NAS unit.
The Seagate NAS HDD has four power modes for varying levels of power efficiency. The active profile is the normal profile during use and draws 3.95 Watts. Idle is a lower speed with the same features still activated on the drive. Standby parks the heads and stops the spindle, but leaves the cache powered for faster resumption time. Sleep, the lowest level, stops the spindle, parks the heads, and powers down the cache buffer. Both Standby and Sleep provide an ultra-low power mode of 0.5 Watts. These values are much lower than desktop HDDs, with their typical active power draw of 8 Watts and idle hovering around 4.5 Watts.
The HDDs are also rated for a very low noise output of only 23 decibels for idle and 25 for active. This is lower than the competing HDDs from WD, which emanate 28 decibels during active use, and 25 during idle. Both NAS HDD's are quieter than desktop models, due partly to their dual plane balancing technology.
Load/Unload cycles are rated for 600,000 cycles, double that of a typical desktop HDD. This resilience allows for the expanded number of idle/resumption periods experienced by an HDD that is designed for a 24X7 usage model.
The Seagate NAS HDD features an UBER of 1 in 10E14, which is typical for this class of drives. The HDD is backed up by a three-year warranty.
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