Seagate Ironwolf 4TB Drives and APM Settings in Ubuntu 22.04 LTS Upgrade (RAID-5 array)
If you have recently upgraded your system from Ubuntu 20.04 LTS to Ubuntu 22.04 LTS and have encountered an issue with your RAID-5 array consisting of four Seagate Ironwolf 4TB hard drives (/dev/sda and /dev/sdd), this article is for you. We will cover the key concepts related to this topic, including APM (Advanced Power Management) settings and how to revert them in Ubuntu 22.04 LTS.
Understanding APM Settings
APM (Advanced Power Management) is a feature that allows hard drive manufacturers to control the power consumption of their drives. It can be configured to reduce power usage when the drive is idle, which can help save energy and reduce heat generation. However, it can also cause issues with performance and reliability, especially in RAID arrays.
In the case of Seagate Ironwolf 4TB drives, the default APM setting is often set to 128, which can cause issues in a RAID-5 array. To resolve this issue, you can revert the APM setting to its default value of 254.
Reverting APM Settings in Ubuntu 22.04 LTS
To revert the APM settings for your Seagate Ironwolf 4TB drives in Ubuntu 22.04 LTS, you can use the hdparm command. This command allows you to view and modify the APM settings for your hard drives.
First, you will need to identify the device names for your Seagate Ironwolf 4TB drives. You can do this by running the following command:
sudo fdisk -l
This will display a list of all the hard drives connected to your system. Look for the drives that correspond to your Seagate Ironwolf 4TB drives, and note their device names (e.g. /dev/sda and /dev/sdd).
Next, you can use the hdparm command to view the current APM settings for your drives. Run the following command for each of your Seagate Ironwolf 4TB drives:
sudo hdparm -B /dev/sdX
Replace sdX with the device name for each of your drives. This will display the current APM setting for each drive.
To revert the APM settings to their default value of 254, run the following command for each of your Seagate Ironwolf 4TB drives:
sudo hdparm -B 254 /dev/sdX
This will set the APM setting for each drive to 254, which is the default value for Seagate Ironwolf 4TB drives.
Verifying the APM Settings
After running the hdparm command, you can verify that the APM settings have been reverted by running the following command for each of your Seagate Ironwolf 4TB drives:
sudo hdparm -B /dev/sdX
This will display the current APM setting for each drive, which should now be set to 254.
- APM (Advanced Power Management) is a feature that allows hard drive manufacturers to control the power consumption of their drives.
- The default APM setting for Seagate Ironwolf 4TB drives is often set to 128, which can cause issues in a RAID-5 array.
- To resolve this issue, you can revert the APM setting to its default value of 254 using the
hdparmcommand in Ubuntu 22.04 LTS.
References
- Seagate Ironwolf 4TB Hard Drive: https://www.seagate.com/internal-hard-drives/desktop-hard-drives/ironwolf-hard-drive/
- hdparm Manual Page: https://man7.org/linux/man-pages/man8/hdparm.8.html
End of article.