IBM DS8880 Series, Introduction And Planning Manual

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Table 80. Power consumption and environmental information for models 984, 985, 986, 84E, 85E, 86E, 988,
88E (continued)
Measurement Unit of measure Base frame Expansion frame
Ground leakage current milliamperes (mA) 43 43
Startup current amperes (A or amp)
≤
100
≤
100
Startup current duration microseconds (µs or µsec) < 200 < 200
Notes:
1. The values represent data obtained from typical systems, which are configured as follows:
v Standard base frames that contain 15 disk drive sets (16 drives per disk drive set, 15 disk drive sets x 16 = 240
disk drives) and Fibre Channel adapters.
v
All-flash configurations that contain 8 sets of fully configured High Performance Flash Enclosures Gen2 and
16 Fibre Channel adapters.
v Expansion models that contain 21 drive sets per storage enclosure (21 drive sets x 16 = 336 drives) and Fibre
Channel adapters.
2. All frames and configurations that are used in single-phase mode must not exceed 8 kVA.
Acoustic declaration
Table 81 describes the acoustic declaration information for the storage system.
Table 81. Acoustic declaration for fully configured version 8.5 storage system
Model
Declared A-weighted sound
power level, LWAd (B)
1, 4
Declared A-weighted sound
pressure level, LpAm (dB)
2, 3, 4
Operating Idling Operating Idling
Model 984, 985,
986, 988 7.9 7.9 62 61
Model 84E, 85E,
86E, 88E 7.9 7.9 62 61
Notes:
1. LWAd is the statistical upper-limit A-weighted sound power level (rounded to the
nearest 0.1 B).
2. LpAm is the mean A-weighted emission sound pressure level that is measured at the
1-meter bystander positions (rounded to the nearest dB).
3. 10 dB (decibel) = 1 B (bel).
4. All measurements made in conformance with ISO 7779 and declared in conformance
with ISO 9296.
Planning for environmental requirements
You must install your storage system in a location that meets the operating
environment requirements for correct maintenance.
Take the following steps to ensure that you meet these requirements:
1. Note where air intake locations are on the models that compose your storage
system.
2. Verify that you can meet the environmental operating requirements at the air
intake locations.
3.
Consider optimizing the air circulation and cooling for the storage system by
using a raised floor, adjusting the floor layout, and adding perforated tiles
around the air intake areas.
Chapter 6. Delivery and installation requirements
163