Specifications

Table 2–1 Environmental Specifications
Condition Specification
Optimum Operating Environment
Temperature
Rate of Change
Step Change
+18° to +24° C (+65° to +75° F)
3° C (5.4° F)
3° C (5.4° F)
Relative Humidity 40% to 60% (noncondensing) with a step change of 10% or less (noncondensing)
Altitude From sea level to 2400 m (8000 ft)
Air Quality Maximum particle count not to exceed 500,000 particles per cubic ft of air at a
size of .5 micron or larger
Inlet Air Volume .026 cubic m per second (50 cubic ft per minute)
Operating Environment – Maximum Range
Temperature +10° to +40° C (+50° to +104° F).
Derate 1.8° C for each 1,000 m (1.0° F for each 1,000 ft) of altitude.
Maximum temperature gradient 20° C/hr (36° F/hr)
Relative Humidity 10% to 85% (noncondensing)
Maximum wet bulb temperature: 28° C (82° F)
Minimum dew point: 2° C (36° F)
Nonoperating or Storage Environment – Maximum Range
Temperature
Nonoperating
Storage
–40° to +66° C (–40° to +151° F)
+18° to +29° C (+65° to +85° F)
Relative Humidity
Nonoperating
Storage
10% to 80% (noncondensing)
8% to 95% if in original shipping container
50% (noncondensing)
Altitude From 300 m (1000 ft) below sea level to 4900 m (16,000 ft) above sea level
2.11 SA550 Storage Array Description
Several SA550 storage array configurations using various combinations of SA7x
enclosures and RA82 disk drives can be installed in an H9646 cabinet. Figure 2–1
shows a typical SA550 storage array.
The following items are installed in all SA550 storage arrays to accommodate
add-on SA7x enclosures:
• Mounting rails
• Internal SDI cables
• Power cords
• Bulkhead connections
SA550 storage arrays are not configured to accommodate add-on RA82 disk drives.
Add-on RA82 disk drives are shipped with all installation materials and cables.
See the SA482 Storage Array User Guide for RA82 add-on installation
instructions.
See Section 5.10 in this manual for SA7x add-on installation instructions.
2–4 Storage Array Descriptions