A REFERENCE GUIDE FOR OPTIMIZING DELL™ MD1000 SAS SOLUTIONS VER A00
PAGE 14 5/06/2005
Reliability Capabilities
• Thermal Reliability
A fully-redundant PowerVault MD1000 storage enclosure contains four digital temperature
sensors, two on the backplane and one on each EMM. In conjunction with the SES
processor, the temperature sensors provide device protection against adverse thermal
conditions. The PowerVault MD1000 storage enclosure is designed to operate within an
ambient temperature range of 10°C (50°F) to 35°C (95°F). When either of the backplane
sensors detects temperature below 3°C (37.4°F) or above 55°C (131°F), the SES
processor notifies the host of a critical temperature situation. This triggers the host to
perform a graceful shutdown of the enclosure within three minutes. In the event that the
host is unable to initiate the enclosure shutdown process or a host is not connected to the
enclosure, the PowerVault MD1000 storage enclosure has an embedded thermal
shutdown feature. This is activated by the SES processor in either of the following cases:
o Either of the backplane temperature sensors detects temperature below -2°C
(28.4°F) or above 60°C (140°F).
o Temperature sensor on an EMM detects temperatures below -2°C (28.4°F) or
above 65°C (149°F).
The PowerVault MD1000 storage enclosure shuts down within 5 seconds of the activation
of an embedded thermal shutdown.
PowerVault MD1000 Serviceability Capabilities
• All the major PowerVault MD1000 components are easily accessible and replaceable
even when in a rack.
• The PowerVault MD1000 storage enclosure is equipped with LED indicators for visual
status reporting on the status of internal components.
• The PowerVault MD1000 storage enclosure’s audible alarm notifies users of critical/non-
critical status (for details, see PowerVault MD1000 Hardware Owners Manual). Status is
also reported to the host system’s management tool, Server Administrator (for details, see
the OpenManage User’s Guide.)
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