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HP 8/20q HP StorageWorks 8/20q Fibre Channel Switch Installation and Reference - Page 19

Bandwidth, Latency, Table 6 Port-to-port latency, Destination Rate, Source

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Bandwidth Bandwidth is a measure of the volume of data that can be transmitted at a given transmission rate. A Fibre Channel port can transmit or receive at nominal rates of 8 Gb/s, 4 Gb/s, or 2 Gb/s depending on the device to which it is connected. This corresponds to full duplex bandwidth values of 1,700 MB, 850 MB, and 424 MB respectively. Multiple source ports can transmit to the same destination port if the destination bandwidth is greater than or equal to the combined source bandwidth. For example, two 4 Gb/s source ports can transmit to one 8 Gb/s destination port. Similarly, one source port can feed multiple destination ports if the combined destination bandwidth is greater than or equal to the source bandwidth. In multiple switch fabrics, each link contributes up to 1,700 MB of bandwidth between those switches, depending on the speed of the link. When additional bandwidth is needed between devices, increase the number of links between the connecting switches. The switch guarantees in-order delivery with any number of links. Latency Latency is a measure of how fast a frame travels through a switch from one port to another. The factors that affect latency include transmission rate and the source/destination port relationship (Table 6). Table 6 Port-to-port latency Destination Rate Source Rate Gbps 2 4 2 < 0.6 μsec < 0.4 μsec 4 < 0.7 μsec1 < 0.3 μsec 8 < 0.6 μsec1 < 0.4 μsec1 8 < 0.3 μsec < 0.2 μsec < 0.2 μsec 1 Based on minimum frame size of 36 bytes. Latency increases for larger frame sizes. HP StorageWorks 8/20q Fibre Channel Switch Installation and Reference Guide 19

Section	Page
Contents	3
General Description	7
Figure 1 8/20q Fibre Channel Switch	7
Switch LEDs and controls	8
Figure 2 Switch LEDs and controls	8
Input power LED (green)	8
Heartbeat LED (green)	8
System fault LED (amber)	8
Maintenance button	9
Resetting a switch	9
Placing the switch in maintenance mode	9
Fibre Channel ports	10
Figure 3 Fibre Channel ports	10
Port LEDs	10
Figure 4 Port LEDs	10
Port Logged-in LED (green)	10
Port Activity LED (green)	11
Transceivers	11
Port types	11
Table 1 Fibre Channel port types	11
Ethernet port	12
Figure 5 Ethernet port	12
Serial port	12
Figure 6 Serial port and pin identification	12
Table 2 Serial port pin identification	13
Power supply and fans	13
Switch management	13
QuickTools web applet	14
Simple SAN Connection Manager	14
Command line interface	14
Enterprise Fabric Management Suite	14
Simple Network Management Protocol	14
Storage Management Initiative–Specification (SMI-S)	15
File transfer protocols	15
Planning a Fabric	17
Devices	17
Device access	17
Table 3 Zoning database limits	17
Performance	18
Distance	18
Table 4 Extended credit distances	18
Table 5 Extended credit minimum cable lengths	18
Bandwidth	19
Latency	19
Table 6 Port-to-port latency	19
Feature licenses	20
Multiple switch fabrics	20
Optimizing device performance	20
Domain ID, principal priority, and domain ID lock	21
Common topologies	21
Transparent routing	21
Switch services	23
Security	25
User account security	25
IP security	25
Port binding	25
Connection security	25
Device security	26
Fabric management	27
Installation	29
Site requirements	29
Management Station and Workstation requirements	29
Table 7 Management station requirements for Simple SAN Connection Managerand Enterprise Fabric Management Suite	29
Table 8 Workstation requirements for QuickTools	29
Switch power requirements	30
Environmental conditions	30
Installing a switch	31
Mount the switch	31
Before you begin	31
Collect the required items	32
Verify the kit contents	32
Table 9 8/20q and SN6000 Fibre Channel Switch rack mount kit hardware	32
Rack the switch	33
Figure 7 Attaching the rails to the switch	33
Figure 8 Installing the rear mounting brackets	34
Figure 9 Installing the switch and rail assembly	34
Figure 10 Fastening the rail to the front of the rack	34
Figure 11 Fastening the rail to the rear mounting bracket	35
Figure 12 Installing the filler panel	35
Install the transceivers	36
Configure the workstation	36
Configuring the workstation IP address for Ethernet connections	36
Configuring the workstation serial port	36
Apply power to the switch	37
Connect the management station or workstation to the switch	38
Figure 13 Management station and workstation cable connections	38
Configure the switch	38
Simple SAN Connection Manager switch configuration	38
QuickTools switch configuration	39
Enterprise Fabric Management Suite configuration	39
CLI switch configuration	39
Cable devices to the switch	39
Installing firmware	40
Using QuickTools to install firmware	40
Using the CLI to install firmware	41
One-step firmware installation	42
Custom firmware installation	43
Adding a switch to an existing fabric	43
Installing feature license keys	44
Configuring Call Home to HP Services (optional)	44
Role of the Remote Support Software Manager	44
Role of OSEM and versions required	44
Installation instructions and documentation for SIM, RSP, and OSEM	45
RSP requirements for the CMS	45
Infrastructure requirements for implementing Call Home to HP Services	46
Configuring Call Home to HP services	46
Diagnostics and Troubleshooting	49
Switch diagnostics	49
Figure 14 Switch LEDs	49
Input power LED is extinguished	49
System fault LED is illuminated	50
Power-On self test diagnostics	50
Heartbeat LED blink patterns	50
Internal firmware failure blink pattern	50
Fatal POST error blink pattern	51
Configuration file system error blink pattern	51
Over-temperature blink pattern	51
Logged-in LED indications	52
Figure 15 Logged-in LED	52
E_Port isolation	52
Excessive port errors	53
Transceiver diagnostics	54
Recovering a switch using maintenance mode	55
Exiting the maintenance menu (option 0)	55
Unpacking a firmware image file in maintenance mode (option 1)	56
Resetting the network configuration in maintenance mode (option 2)	56
Resetting user accounts in maintenance mode (option 3)	56
Copying log files in maintenance mode (option 4)	56
Removing the switch configuration in maintenance mode (option 5)	56
Remaking the file system in maintenance mode (option 6)	56
Resetting the switch in maintenance mode (option 7)	57
Updating the boot loader in maintenance mode (option 8)	57
Support and Other Resources	59
Document conventions and symbols	59
Table 10 Document conventions	59
Contacting HP	59
HP contact information	59
Rack stability	60
Subscription service	60
Documentation feedback	60
New and changed information in this edition	60
Related information	60
Documents	60
Other HP websites	61
Customer self repair	61
Regulatory Compliance and Safety	63
Regulatory compliance	63
Federal Communications Commission notice for Class A equipment	63
Cables	63
Laser device	63
Laser safety warning	63
Certification and classification information	64
Laser product label	64
Figure 16 Class 1 laser product label	64
International notices and statements	64
Canadian notice (avis Canadien)	64
European Union regulatory notice	65
Japanese notice	65
Korean notice	65
Taiwan notice	65
How to Prevent Electrostatic Discharge	67
Grounding methods	67
Technical Specifications	69
General specifications	69
Table 11 General specifications for the 8/20q Fibre Channel Switch	69
Maintainability features	70
Table 12 Maintainability feature for the 8/20q Fibre Channel Switch	70
Fabric management specifications	71
Table 13 Fabric management specifications for the 8/20q Fibre Channel Switch	71
Weight and physical dimensions	71
Table 14 Switch physical dimensions for the 8/20q Fibre Channel Switch	71
Electrical specifications	71
Table 15 Electrical specifications for the 8/20q Fibre Channel Switch	71
Environmental requirements	72
Table 16 Environmental requirements	72
Factory Configuration Defaults	73
Factory switch configuration	73
Table 17 Switch configuration defaults	73
Factory port configuration	74
Table 18 Port configuration defaults	74
Factory port threshold alarm configuration	75
Table 19 Port threshold alarm configuration defaults	75
Factory zoning configuration	75
Table 20 Zoning configuration defaults	75
Factory SNMP configuration	76
Table 21 SNMP configuration defaults	76
Factory switch services configuration	76
Table 22 Services configuration defaults	76
Factory DNS host name configuration	77
Table 23 DNS host name configuration defaults	77
Factory IP version 4 Ethernet configuration	77
Table 24 IP version 4 Ethernet configuration defaults	77
Factory IP version 6 Ethernet configuration	77
Table 25 IP version 6 Ethernet configuration defaults	77
Factory event logging configuration	78
Table 26 Event logging configuration defaults	78
Factory NTP server configuration	78
Table 27 NTP server configuration defaults	78
Factory timer configuration	78
Table 28 Timer configuration defaults	78
Factory RADIUS configuration	79
Table 29 RADIUS configuration defaults	79
Factory security configuration	79
Table 30 Security configuration defaults	79
Factory Call Home configuration	80
Table 31 Call Home service configuration defaults	80
Glossary	81
Index	85
Numerics	85
A	85
B	85
C	85
D	85
E	85
F	85
G	86
H	86
I	86
L	86
M	86
N	86
O	86
P	86
Q	87
R	87
S	87
T	87
U	87
V	87
W	87

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HP StorageWorks 8/20q Fibre Channel Switch Installation and Reference Guide

Bandwidth

Bandwidth is a measure of the volume of data that can be transmitted at a given transmission rate. A Fibre

Channel port can transmit or receive at nominal rates of 8 Gb/s, 4 Gb/s, or 2 Gb/s depending on the

device to which it is connected. This corresponds to full duplex bandwidth values of 1,700 MB, 850 MB,

and 424 MB respectively. Multiple source ports can transmit to the same destination port if the destination

bandwidth is greater than or equal to the combined source bandwidth. For example, two 4 Gb/s source

ports can transmit to one 8 Gb/s destination port. Similarly, one source port can feed multiple destination

ports if the combined destination bandwidth is greater than or equal to the source bandwidth.

In multiple switch fabrics, each link contributes up to 1,700 MB of bandwidth between those switches,

depending on the speed of the link. When additional bandwidth is needed between devices, increase the

number of links between the connecting switches. The switch guarantees in-order delivery with any number

of links.

Latency

Latency is a measure of how fast a frame travels through a switch from one port to another. The factors that

affect latency include transmission rate and the source/destination port relationship (

Table 6

Port-to-port latency

Destination Rate

Source

Rate

Gbps

< 0.6

sec

< 0.7

sec

Based on minimum frame size of 36 bytes. Latency increases for larger frame sizes.

< 0.6

sec

< 0.4

sec

< 0.3

sec

< 0.4

sec

< 0.3

sec

< 0.2

sec

< 0.2

sec