Dear Rankin School District #98, As part of our historic building addition project, the District is pleased to announce that December 4, 2017, will be the opening of the new parking lot and the beginning of our new traffic pattern.
For example, if you have an array of 6 physical disks, and the Avg. Disk Queue Length is 10 for a particular array, then the actual Avg. Disk Queue Length for each drive is 1.66 (10/6=1.66), which is well within the recommended 2 per physical disk.
Figure 11.3 Writing Data to a RAID-5 Volume. Implementing a RAID-5 volume requires a minimum of three and a maximum of 32 disks in the set. The physical disks do not need to be identical. However, there must be equal size blocks of unused space available on each physical disk in the set. The disks can be on the same or different controllers. As with striped volumes, you cannot add disks to a RAID-5 volume if you need to increase the size of the volume later. If one of the disks in a RAID-5 volume fails, none of the data is lost. When a read operation requires data from the failed disk, the system reads all of the remaining good data stripes in the stripe and the parity stripe. Each data stripe is subtracted (with XOR) from the parity stripe; the order is not important.