IBM RedBooks SAN24B-5, Инструкция по установке, обслуживанию и эксплуатации

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Data transmission ranges
Table 13 provides the data transmission ranges for different transceivers, port
speeds, and cable types.
Table 13. Supported optics, speeds, cables, and distances
Transceiver
type
Form factor Speed
Multi-Mode Media Maximum Distance
Single Mode
Media
Maximum
Distance
62.5 microns
(OM1) 50 microns
(OM2) 50 microns
(OM3) 50 microns
(OM4)
9 microns
SWL SFP+ 4 Gbps 70 m (229 ft.) 150 m (492
ft.)
380 m (1264
ft.) 400 m (1312
ft.) N/A
SFP+ 8 Gbps 21 m (68 ft.) 50 m (164 ft.) 150 m (492
ft.)
190 m (623
ft.) N/A
SFP+ 16 Gbps 15 m (49 ft.) 35 m (115 ft.) 100 m (328
ft.)
125 m (410
ft.) N/A
LWL SFP+ 4Gbps N/A N/A N/A N/A 30 km (18.6
mi)
SFP+ 8 Gbps N/A N/A N/A N/A 10 km (6.2
mi.) or 40
km (24.8 mi.)
SFP+ 16 Gbps N/A N/A N/A N/A 10 km (6.2
mi.)
Up to 7500 km at 2G is supported when using long distance transport system such
as DWDM.
Memory specifications
The switch has three types of memory devices, boot flash, compact flash, and main
memory. The size of each is listed in Table 14.
Table 14. Memory specifications
Memory type Amount
Boot flash 4 MB (expandable to 8 MB)
Compact flash 1 GB
Main memory (DDR2 SDRAM) 1 GB, 64-bit bus operating at 166 MHz with
8-bit ECC
Fibre Channel port specifications
The Fibre Channel ports in the SAN24B-5 are compatible with SWL, LWL, and
ELWL SFP+ (for 16 Gbps performance) transceivers. The strength of the signal is
determined by the type of transceiver in use.
The ports meet all required safety standards. For more information about these
standards, see “Electronic emission notices” on page 48.
The ports are capable of operating at 2, 4, 8, or 16 Gbps depending on SFP+
transceiver models and are able to autonegotiate to the maximum link speed.
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SAN24B-5 Installation, Service, and User Guide