IBM SAN40B-4 User Guide - Page 61

Memory, specifications, transmission, ranges

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Table 12. Environmental requirements (continued) Condition Acceptable range during operation Air flow High speed, 13,000 RPM, 29 cubic feet/minute Low speed, 7000 RPM, 22 cubic feet/minute Acceptable range during non-operation None required Memory specifications The switch memory specifications are shown in Table 13. Table 13. Memory specifications Memory type Main memory (SDRAM) Compact flash Boot flash Installed memory 512 MB 1 GB 4 MB Data transmission ranges Table 14 provides the data transmission ranges for different cable types and port speeds. Table 14. Data transmission ranges Port speed Cable size (microns) Short wavelength (SWL) 1 Gbps 50 500 m (1,640 ft) 62.5 300 m (984 ft) 9 N/A 2 GGbps 50 300 m (984 ft) 62.5 150 m (492 ft) 9 N/A 4 Gbps 50 62.5 9 8 Gbps 50 62.5 9 150 m (492 ft) 70 m (230 ft) N/A 150 m (492 ft) 21 m (69 ft) N/A Long wavelength (LWL) Extended Long Wavelength (ELWL) N/A N/A N/A N/A up to 10 km (6.2 mi) up to 40 km (24.8 mi) N/A N/A N/A N/A 10 km (6.2 miles) without an Extended Fabrics license; 50 to 100 km with an Extended Fabrics license up to 40 km (24.8 mi) N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 10 km N/A Appendix. Product specifications 37

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Table
12.
Environmental
requirements
(continued)
Condition
Acceptable
range
during
operation
Acceptable
range
during
non-operation
Air
flow
High
speed,
13,000
RPM,
29
cubic
feet/minute
Low
speed,
7000
RPM,
22
cubic
feet/minute
None
required
Memory
specifications
The
switch
memory
specifications
are
shown
in
Table
13.
Table
13.
Memory
specifications
Memory
type
Installed
memory
Main
memory
(SDRAM)
512
MB
Compact
flash
1
GB
Boot
flash
4
MB
Data
transmission
ranges
Table
14
provides
the
data
transmission
ranges
for
different
cable
types
and
port
speeds.
Table
14.
Data
transmission
ranges
Port
speed
Cable
size
(microns)
Short
wavelength
(SWL)
Long
wavelength
(LWL)
Extended
Long
Wavelength
(ELWL)
1
Gbps
50
500
m
(1,640
ft)
N/A
N/A
62.5
300
m
(984
ft)
N/A
N/A
9
N/A
up
to
10
km
(6.2
mi)
up
to
40
km
(24.8
mi)
2
GGbps
50
300
m
(984
ft)
N/A
N/A
62.5
150
m
(492
ft)
N/A
N/A
9
N/A
10
km
(6.2
miles)
without
an
Extended
Fabrics
license;
50
to
100
km
with
an
Extended
Fabrics
license
up
to
40
km
(24.8
mi)
4
Gbps
50
150
m
(492
ft)
N/A
N/A
62.5
70
m
(230
ft)
N/A
N/A
9
N/A
N/A
N/A
8
Gbps
50
150
m
(492
ft)
N/A
N/A
62.5
21
m
(69
ft)
N/A
N/A
9
N/A
10
km
N/A
Appendix.
Product
specifications
37