So it's possible to recover data if two drives in a RAID 10 configuration fail, but it's dependent upon which two drives fail. Consider a four-drive RAID 10 setup where drives A and B have data striped across them and are mirrored by drives C and D on the opposite side. This RAID group can recover if any or all drives in a stripe fail, but not if both drives in a particular mirror fail. Therefore, we can recover if drives A and B or drives C and D fail, but not if drives A and C or drives B and D fail.
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
Related Q&A from Steve Pinder
When adding an old hard drive to RAID sets on servers, it’s important to account for factors such as the number of drive bays in the host. See how to...continue reading
In this Ask the Expert, Steve Pinder talks about which RAID level to choose, depending on the criticality of your data or the capacity required.continue reading
Learn about the differences between a FATA disk and a Fibre Channel drive, and find out how to determine which drive type is better for Exchange 2007...continue reading