Dell IP4700 Service Guide - Page 36

Storage Processor Fan Pack, IMPORTANT

Get Dell IP4700 PDF manuals and user guides View all Dell IP4700 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 36 highlights

The IP4700 1 Storage Processor Fan Pack The storage processor fan pack (see Figure 1-2 and Figure 1-14) cools the storage processors from the front of the IP4700. It contains three fans that draw ambient room air through the storage processor fan pack cover, through the midplane, and across the storage processors. The storage processor fan pack connects to the IP4700 midplane via an internal cable, and either power supply can power it. The fans operate at a lower voltage and speed during normal operation to minimize acoustic noise. If a fan fails, the voltage and speed of the remaining fans increase to compensate, resulting in higher acoustic noise. The storage processor fan pack has one status light visible when the storage processor fan pack cover is removed. The status light is described in Chapter 3. Latches on the storage processor fan pack hold the pack in place. Fault LED (amber) Latches Figure 1-14 Storage Processor Fan Pack EMC1470 IMPORTANT: You can remove the storage processor fan pack while the IP4700 is powered up. If the pack is removed for more than approximately two minutes, the SPs and disk modules power down. While the fan is removed, the cache is off and flushing. The SPs and disk modules power up when you reinstall the SP fan pack. What Next? Continue to the next chapter, which tells how to install a IP4700. 1-18 IP4700 Installation and Service Guide

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
1
1-18
IP4700 Installation and Service Guide
The IP4700
Storage Processor Fan Pack
The storage processor fan pack (see Figure 1-2 and Figure 1-14) cools
the storage processors from the front of the IP4700. It contains three
fans that draw ambient room air through the storage processor fan
pack cover, through the midplane, and across the storage processors.
The storage processor fan pack connects to the IP4700 midplane via
an internal cable, and either power supply can power it. The fans
operate at a lower voltage and speed during normal operation to
minimize acoustic noise. If a fan fails, the voltage and speed of the
remaining fans increase to compensate, resulting in higher acoustic
noise.
The storage processor fan pack has one status light visible when the
storage processor fan pack cover is removed. The status light is
described in Chapter 3. Latches on the storage processor fan pack
hold the pack in place.
Figure 1-14
Storage Processor Fan Pack
IMPORTANT:
You can remove the storage processor fan pack while the
IP4700 is powered up. If the pack is removed for more than approximately
two minutes, the SPs and disk modules power down. While the fan is
removed, the cache is off and flushing.
The SPs and disk modules power up when you reinstall the SP fan pack.
What Next?
Continue to the next chapter, which tells how to install a IP4700.
EMC1470
Fault
LED
(amber)
Latches