configuration for Samsung SSD 830

I would like to know what would be the best filesystem configuration for a Samsung SSD 830 of a fresh Ubuntu 12.04 install on my laptop (Asus U33JC). I've seen people suggesting a RAID configuration, but I have no idea where to start with this.

Solution 1:

Just use ext4 filesystem with discard mount option.

RAID is designed for multiple disks (be it HDDs or SSDs) and is used on servers.

See also:

• How do I optimize the OS for SSDs?

Solution 2:

To enable discard you should alter the /etc/fstab file. Mine looks like this after a clean install using two SSDs:

# / was on /dev/sda2 during installation
UUID=bd379bf3-bb3a-4c0e-a7e0-c6545903eb26 /               ext4    noatime,discard 0       1
# /boot/efi was on /dev/sdb1 during installation
UUID=3AE5-1A3B  /boot/efi       vfat    defaults        0       1
# /data/large was on /dev/sda6 during installation
UUID=69c10986-d12f-47d1-a90d-8c8b07909b4b /data/large     ext4    noatime,discard        0       2
# /data/medium was on /dev/sdb2 during installation
UUID=e9c90115-6530-4866-b43c-8084d87769e1 /data/medium    ext4    noatime,discard        0       2
# /data/small was on /dev/sda3 during installation
UUID=e22f25a0-b8de-48dd-8799-b525f2afadff /data/small     ext4    noatime,discard        0       2
# /home was on /dev/sda1 during installation
UUID=8e2e8638-2098-4282-9a33-9d32db0932b7 /home           ext4    noatime,discard        0       2

The noatime means it won't update the "last access time" when you open the files, saving a few extra writes.