Memory Specifications; Data Transmission Ranges - IBM SAN40B-4 - System Storage Switch User & Service Manual

Memory specifications

The switch memory specifications are shown in Table 13.

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
1 Gbps 50
62.5
9
2 GGbps 50
62.5
9
4 Gbps 50
62.5
9
8 Gbps 50
62.5
9
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
Table 13. Memory specifications
Memory type
Main memory (SDRAM)
Compact flash
Boot flash
(SWL)
500 m (1,640 ft)
300 m (984 ft)
N/A
300 m (984 ft)
150 m (492 ft)
N/A
150 m (492 ft)
70 m (230 ft)
N/A
150 m (492 ft)
21 m (69 ft)
N/A
Acceptable range during
non-operation
None required
Installed memory
512 MB
1 GB
4 MB
Long wavelength Extended Long
(LWL) 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) up to 40 km (24.8 mi)
without an Extended
Fabrics license; 50 to
100 km with an
Extended Fabrics
license
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