Disk drive type
Serial Attached SCSI (SAS) are 12-volt, and support the SAS interface. Firmware and
drive carriers are unique to EMC. Refer to EMC Online Support for a listing of the
supported drives.
Network cabling
Only 3M, 4M and 5M are used with Data Domain shelves.
System operating limits
The ambient temperature specification is measured at the front bezel inlet. The site
must have air conditioning of the correct size and placement to maintain the specified
ambient temperature range and offset the heat dissipation listed below.
Table 2 System operating limits
Requirement Description
Ambient temperature 41°F to 104°F (5°C to 40°C)
Temperature gradient 18°F/hr (10°C/hr)
Relative humidity (extremes) 20% to 80% noncondensing
Relative humidity (recommended) 40% to 55% noncondensing
Elevation -50 to 35,000 ft (-16 to 10,600 m)
The allowable relative humidity level is 20 to 80% noncondensing. However, the recommended
operating environment range is 40 to 55%. To minimize the risk of hardware corrosion and
degradation, we recommend lower temperatures and humidity for data centers with gaseous
contamination such as high sulfur content. In general, the humidity fluctuations within the
data center should be minimized. We also recommend that the data center be positively
pressured and have air curtains on entry ways to prevent outside air contaminants and
humidity from entering the facility. For facilities below 40% relative humidity, we recommend
grounding straps when contacting the equipment to avoid the risk of Electrostatic discharge
(ESD), which can harm electronic equipment.
For systems mounted in a cabinet, the operating limits listed above must not be
exceeded inside the closed cabinet. Equipment mounted directly above or below an
shelf must not restrict the front-to-rear airflow of the storage system. Cabinet doors
must not impede the front-to-rear airflow. The cabinet must exhaust air at a rate that
is equal to or greater than the sum of the exhaust rates of all the equipment mounted
in the cabinet.
Technical Specifications
18 EMC Data Domain DS60 Expansion Shelf Installation and FRU Replacement Hardware Guide
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