10
Netra t1 User and Administration Guide • June 2000
Example B
The power requirement for a Netra t1 system operating at 65% PSU efficiency and
containing:
■
440 MHz CPU
■
1 Gbyte RAM
■
Two 18 Gbyte disk drives
■
CD-ROM drive
is calculated as follows:
Note –
To calculate the total power requirement for several Netra t1 systems
installed in a single rack or cabinet, add together the individual power requirement
figure (
) for each Netra t1 you have installed.
Calculating the Heat To Be Dissipated
To calculate the heat generated by a Netra t1 system so that you can estimate the
heat your cooling system must dissipate, convert the figure for the system’s power
requirement (see “Calculating the Power Requirements for your Netra t1” on page 9)
from watts to BTU/hr. A general formula for doing this is to multiply the figure for
the power requirement by 3.415. For example, the heat that must be dissipated for
the system in:
■
Example A is 92.28 x 3.415=315.14 BTU/hr
■
Example B is 108.4 x 3.415=370.19 BTU/hr
What’s Next?
When you have used this chapter to calculate the power and cooling requirements
for your Netra t1 system, go to Chapter 3 which tells you how to assemble the DC
input power cables for the Netra t1 Model 100, or, if you are installing a Model 105
system, go straight to Chapter 4 to find out how to install the optional hardware
modules available for the Netra t1.
36.3
0.21
16
×
(
)
13.8
2
×
(
)
3.2
+
+
+
0.65
-----------------------------------------------------------------------------------------
108.4W
=
SysAdmin.book Page 10 Friday, March 30, 2001 2:38 PM
Содержание Netra t1 100
Страница 12: ...xii Netra t1 User and Administration Guide June 2000 SysAdmin book Page xii Friday March 30 2001 2 38 PM...
Страница 14: ...xiv Netra t1 User and Administration Guide June 2000 SysAdmin book Page xiv Friday March 30 2001 2 38 PM...
Страница 20: ...xx Netra t1 User and Administration Guide June 2000 SysAdmin book Page xx Friday March 30 2001 2 38 PM...
Страница 21: ...PART I Installation and Configuration SysAdmin book Page 1 Friday March 30 2001 2 38 PM...
Страница 22: ...SysAdmin book Page 2 Friday March 30 2001 2 38 PM...
Страница 28: ...6 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 6 Friday March 30 2001 2 38 PM...
Страница 52: ...30 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 30 Friday March 30 2001 2 38 PM...
Страница 80: ...58 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 58 Friday March 30 2001 2 38 PM...
Страница 86: ...64 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 64 Friday March 30 2001 2 38 PM...
Страница 94: ...72 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 72 Friday March 30 2001 2 38 PM...
Страница 95: ...PART II Maintenance and Management SysAdmin book Page 73 Friday March 30 2001 2 38 PM...
Страница 96: ...SysAdmin book Page 74 Friday March 30 2001 2 38 PM...
Страница 121: ...PART III Appendices SysAdmin book Page 99 Friday March 30 2001 2 38 PM...
Страница 122: ...SysAdmin book Page 100 Friday March 30 2001 2 38 PM...
Страница 138: ...116 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 116 Friday March 30 2001 2 38 PM...
Страница 148: ...126 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 126 Friday March 30 2001 2 38 PM...
Страница 154: ...132 Netra t1 User and Administration Guide June 2000 SysAdmin book Page 132 Friday March 30 2001 2 38 PM...