disk spindown

https://yewtu.be/watch?v=IfFyHizCn6k
https://wiki.archlinux.org/title/hdparm
Spindown disk immediately (sleep mode)

sudo hdparm -Y /dev/sdb

Spindown disk while and be able to check idle state (standy)

sudo hdparm -y /dev/sdb

Check the status of disk standy/idle, not possible to check if disk is in full sleep mode
sudo hdparm -C /dev/sdb
Check the status without waking up the drive using smartctl

smartctl -i -n standby /dev/sdb

Set idle timer in terminal (no options to check the current)
hdparm -S 5 /dev/sdb

• 0-240 multiple of 5s
• 240-255 multiples of 30min

Hard Drive power saving mode APM
hdparm -B 0-255 /dev/sdb

Read the hard drive temperature
hdparm -H

Benchmark hard drive
hdparm -t

hd-idle

In the case hdparm do not work correctly, this is the utility to use.

sudo apt install hd-idle

Edit the configuration options at /etc/defaults/hd-idle

HD_IDLE_OPTS="-i 0 -a sda -i 120 -a sdd -i 60 -a sdc -i 60 -l /var/log/hd-idle.log"

• the first -i 0 sets the default spindown timer for all disks in the system
• -a is for which device to spindown if there are multiple, it has to be in the format of sdx without the /dev
  • try using hd-idle -t disk-name, if there is an error such as No such devices /dev//dev/xxx then add the disk name without the /dev
• -i sets the spindown time in seconds for the device to be spun down in -a
• -l set the log location, hd-idle will write to log every time a disk spinup
  Check whether HDD’s are really spun down

watch 'for i in a b c d; do sudo smartctl -i -n standby /dev/sd$i | grep -Ei "power|model"; done'

Refined scripts in /var/scripts

watch --color bash /var/scripts/hdd

systemd automation

sudo systemctl start hdd@data2 # hdd@mount start keepalive
sudo systemctl stop hdd@data2 # stop keepalive