💾 Disk

How to choose the right disk for your PC, Server, or NAS.

HDD

HDD is a storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks coated with magnetic material.

SSD

SSD is a storage device that uses integrated circuit assemblies as memory to store data persistently.

Checking SSD Health on your Mac

1. Install smartmontools

brew install smartmontools

2. Check status

sudo smartctl --all /dev/disk0 # Replace disk0 with the disk you want to check

3. Look for the "Media Wearout Indicator" value. New SSDs have a value of 100, and the value decreases as the drive wears out.

Misc

• Backblaze Hard Drive Test Data publish the hard drive failure rates for the drives they use in their data centers every quarter.