TechNote: Minimum Disk Configurations for a Sun StorEdge A5x00 Disk Array
Sun StorEdge A5x00 disk arrays (often known as Photon arrays or simply Photons) require a minimum number of disks to be installed and placed in certain slots to ensure proper operation of the array. This minimum configuration is a requirement because circuitry on the disk drives regenerate and retime the data signals which corrects signal quality loss accumulated through the bypass circuitry between empty slots.
Model |
Minimum Disks |
Front Backplane Slots |
Rear Backplane Slots |
A5000 |
5 |
3 and 6 |
0, 3, 6 |
A5100 |
5 |
3 and 6 |
0, 3, 6 |
A5200 |
7 |
0, 5, 10 |
0, 3, 6, 10 |