Asustor Nimbustor 2 Gen2 AS5402T Review

Power Consumption

The Settings / Hardware section in ADM lets you make changes to energy control. We can set a time period for internal and external disks to enter hibernation mode if there’s no access within the time period specified. We can choose from Never, 5 minutes, 10 minutes, 15 minutes, 30 minutes, or 60 minutes. And we can force the NAS into Sleep Mode S3 (Suspend to RAM). The time period for Sleep mode can set to Never, 30 minutes, 60 minutes, 90 minutes, or 120 minutes. There’s also the option to specify the hours of the day in which the NAS is able to enter Sleep Mode.

The Power section lets you enable EuP (Energy Using Product) Mode. And there’s the option to disable Wake on LAN (WOL) and Wake on WAN (WOW) which will also make a very minor reduction in power consumption.

Even though electricity prices are falling in the UK, power consumption is still an important consideration for many companies and households. This NAS is an efficient device. The power consumption figures in the table below reflect our NAS is populated with 2 x 6TB 7200RPM hard disk and 2 x NVMe SSD.

AS5402T Power ConsumptionWatts
Copying 9GB file from mechanical disk to mechanical disk36.8
In Operation with disks idle29.2
100% CPU usage in VirtualBox 122.4
Disks in hibernation15.4
Sleep mode S3 (Suspend to RAM)0.6
1 Using the stress utility to fully use all CPU cores with mechanical disks in hibernation

All the figures are measured with EuP mode disabled and WOL AND WOW enabled.

Next page: Page 5 – Observations and Summary

Pages in this article:
Page 1 – Introduction / Design & Build
Page 2 – Specifications
Page 3 – ADM
Page 4 – Power Consumption
Page 5 – Observations and Summary

Complete list of articles in this series:

Asustor Nimbustor 2 Gen2 AS5402T
ReviewDetailed review of this enthusiast-grade NAS, with entry-level pricing
ADM: Part 1Getting Started with ADM
ADM: Part 2Detailed review of ADM v4.2.5
AiMasterAiMaster is a NAS management app for mobile devices
App Central OverviewExtend the functionality of your NAS with software from App Central
UrBackupSetting up the UrBackUp server on the NAS
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