Dell PowerVault MD1000 Hardware Owners Manual - Page 11

Table 1-3. Drive Carrier Status LEDs LED Description Off Slot empty, drive not yet discovered by server, or an unsupported drive is present Steady green Drive is online Green flashing (250 milliseconds Drive is being identified or is being prepared for removal [ms]) Green flashing On 400 ms Off 100 ms Drive rebuilding Amber flashing (125 ms) Drive failed Green/amber flashing Green On 500 ms Amber On 500 ms Off 1000 ms Predicted failure reported by drive Green/amber flashing Green On 3000 ms Off 3000 ms Amber On 3000 ms Off 3000 ms Drive being spun down by user request or other nonfailure condition Back-Panel Indicators and Features Figure 1-4 shows the back-panel features of a fully populated enclosure containing both enclosure management modules (EMMs) and two power supply/cooling fan modules. The enclosure requires at least one EMM to be installed; if only one EMM is installed, it must reside in the primary (left, as seen from rear of enclosure) EMM bay. Both power supply/cooling fan modules must be installed. However, the enclosure can run temporarily on one power supply/cooling fan module. For more information, see "Power Supply and Cooling Fan Features." About Your System 11