4 x 2TB drives, safe to use RAID-5? What is failure rate


I've read a number of opinions on the risks of running a RAID-5 using 4 x 2TB drives. Apparently the failure rate of the 2TB drives is so high that there is less redundancy than is generally expected.

2TB drives have been on the market for a long time now. Is this opinion founded?

If relevant, the system is Linux using md/lvm. Alternative suggestions appreciated.

Best Answer

  • Useful reading:

    Apparently with storage capacities of modern SATA hard drives now reaching 2-terabytes in size, the odds of a read error during a RAID 5 disk reconstruction is becoming unavoidable.