SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/aplus-raid1-mirror

Which RAID level writes identical data to each member disk?

RAID 1, mirroring.

Start playing free

  1. RAID 1 ✔
  2. RAID 0
  3. RAID 6

Why: RAID 1 mirrors data by writing the same data to every member disk. If one drive fails, the array can keep running on a surviving disk. RAID 0 stripes and RAID 6 uses dual parity.

Huh, didn't know that: Red Hat says RAID 1 offers the highest redundancy of all RAID types.

The dad joke
Did you hear about the monkeys who shared an Amazon account? They were Prime mates.
Like this card?
Play the game

References

Answer: RAID 1. RAID 1 mirrors data by writing the same data to every member disk. If one drive fails, the array can keep running on a surviving disk. RAID 0 stripes and RAID 6 uses dual parity.

  1. Red Hat Enterprise Linux 9: Managing RAID docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/managing_storage_devices/managing-raid_managing-storage-devices
    RAID level 1, or mirroring, provides redundancy by writing identical data to each member disk of the array
    Checked 2026-10-10.
  2. Red Hat Enterprise Linux 9: Managing RAID docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/managing_storage_devices/managing-raid_managing-storage-devices
    combine the performance advantages of level 0 with the redundancy of level 1
    Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Tech & GadgetsWhich RAID level can recover from the loss of any two drives in the array?Tech & GadgetsWhich RAID level stripes data for speed but provides no redundancy?Tech & GadgetsWhich TCP port does Secure Shell (SSH) use by default?

That's stuff everyone should know.