IBM FlashSystem 5000 Series Quick Installation Manual page 28

Figure 3. Rack space requirements for the 5U expansion enclosure
Enclosure clearances
Ensure that additional clearance, as shown in Table 13 on page 10, is available around each of the
control and expansion enclosures.
Table 13. Enclosure clearances
Location
Left and right sides
Back
Supported drives for enclosures
Ccontrol enclosures and expansion enclosures support drives of different types and storage capacities.
See IBM Knowledge Center for details about your system.
Acoustical noise emissions
Table 14 on page 10 provides the acoustical specifications for FlashSystem 5000 systems. The noise
emission level that is stated is the declared (upper limit) sound power level, in decibels, for a random
sample of enclosures. All measurements are made in accordance with ISO 7779 and reported in
conformance with ISO 9296.
Table 14. Acoustical noise emissions
Enclosure type
Control enclosure
Expansion enclosure (2U)
Table 15 on page 11 provides the acoustical specifications for the 2072-92G / 2072-F92 and 2072-E92
SAS expansion enclosures in accordance with ISO 9296
Important: Hearing conservation program (HCP) procedures are required for field service personnel
servicing a 2072-92G / 2072-F92 or 2072-E92 SAS expansion enclosure.
10 IBM FlashSystem 5000 : FlashSystem 5000 Quick Installation Guide
Space requirement
50 mm (2 in.)
Minimum: 100 mm (4 in.). This is
not needed for 5U models.
Drive configuration
12 LFF drives
24 SFF drives
12 LFF drives
24 SFF drives
Reason
Cooling air flow
Cable exit
Acoustical output per enclosure
Idling
6.2 bels
6.2 bels
6.1 bels
6.2 bels
(1,2,3)
.
Operating
6.1 bels
6.1 bels
6.1 bels
6.2 bels