Dell PowerEdge M1000e Technical Manual
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Brand: Dell
Category: Chassis , Computer Hardware , Controller , Desktop , Enclosure , Network Hardware , Server , Switch
Type: Technical manual for Dell PowerEdge M1000e
Pages: 71 (3.17 Mb)
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28 PowerEdge M1000e Technical Guide
Fabric specifications Table 2.
Fabric
Encoding
Symbol rate per
lane (Gbps)
Data rate per
lane (Gbps)
Data rate per
link (Gbps)
Lanes per link per
industry
specification
PCIe 1.0
8B/10B
2.5
2
8 (4 lane)
1, 2, 4, 8, 12, 16, 32
PCIe 2.0
8B/10B
5
4
16 (4 lane)
1, 2, 4, 8, 12, 16, 32
PCIe 3.0
128B/130B
8
7.88
31.51 (4 lane)
1, 2, 4, 8, 12, 16, 32
SATA 3Gbps
8B/10B
3
2.4
2.4
1
SATA 6Gbps
8B/10B
6
4.8
4.8
1
SAS 3Gbps
8B/10B
3
2.4
2.4
1-Any
SAS 6Gbps
8B/10B
6
4.8
4.8
1-Any
FC 4Gbps
8B/10B
4.25
3.4
3.4
1
FC 8Gbps
8B/10B
8.5
6.8
6.8
1
FC 16Gbps
64B/66B
14.025
13.6
13.6
1
IB SDR
8B/10B
2.5
2
8 (4 lane)
4, 12
IB DDR
8B/10B
5
4
16 (4 lane)
4, 12
IB QDR
8B/10B
10
8
32 (4 lane)
4, 12
IB FDR10
64B/66B
10.3125
10
40 (4 lane)
4, 12
IB FDR
64B/66B
14.0625
13.64
54.56 (4 lane)
4, 12
GbE:
1000BASE-KX
8B/10B
1.25
1
1
1
10GbE:
10GBASE-KX4
8B/10B
3.125
2.5
10 (4 lane)
4
10GbE:
10GBASE-KR
64B/66B
10.3125
10
10
1
Symbol rate is defined as the maximum fabric speed with all data encoded as per its encoding
mechanism. Data rate is the maximum amount of actual data bits that can be transported on the
fabric. Some fabrics are defined as single lane only, while others are defined in various lane
increments for link to lane aggregation in order to provide increased total bandwidth.
The bandwidth growth path for Ethernet is from GE to 10GE, supported through three backplane
standards defined by the IEEE 802.3ap Committee. 1000BASE-KX supports GE through 1.25 Gbps
differential backplane signaling. 10GBASE-KX4 supports 10GE through four lanes of 3.125 Gbps
differential backplane signaling. The four lanes are aggregated to provide the sum total 10 Gbps
bandwidth requirement. 10GBASE-KR is an emerging IEEE 802.3ap standard that supports 10GE
through a single lane of 10.3125 Gbps differential backplane signaling. In terms of customer impact,
this means that today’s modular systems using 10GBASE-KX4 are limited to one 10GE channel per
four lanes of internal differential signaling, while in the future those same lanes can carry multiple
lanes of 10GBASE-KR and provide a resultant increase in total system throughput. This growth path
applies to both Fabrics B and C in the M1000e.