RAID
User Guide
RAID 6 is no more space inefficient than RAID 5 with a hot spare drive when used with a
small number of drives, but as arrays become bigger and have more drives the loss in
storage capacity becomes less important and the probability of data loss is greater.
RAID 6 provides protection against data loss during an array rebuild, when a second
drive is lost, a bad block read is encountered, or when a human operator accidentally
removes and replaces the wrong disk drive when attempting to replace a failed drive.
5.3.5
RAID 0+1: Striped set with Mirroring
RAID 0+1 combines the advantages of RAID 0 and RAID 1 with none of the
disadvantages. RAID 0+1 creates a mirror of the primary striped set. RAID 0+1 provides
optimal speed and reliability.
Summary of Contents for ExaSAN A12S2-PS
Page 8: ...1 Introduction User Guide 1 Introducing ExaSAN PCIe 2 0 Storage System...
Page 28: ...2 Preparation User Guide 2 Preparing to Install ExaSAN A12S2 PS...
Page 31: ...3 Installation User Guide 3 Installing the ExaSAN A12S2 PS...
Page 47: ...4 How to Use User Guide 4 Using RAIDGuard X...
Page 77: ...4 How to Use User Guide Page 4 30 2 Check the Confirm box and click Unlock Drive...
Page 79: ...5 RAID User Guide 5 RAID Overview...
