Dell PowerVault 35F User Manual

Contents: Dell PowerVault 35F User's Guide

Dell™ PowerVault™ 35F User's Guide

Safety Instructions Introducing the PowerVault™ 35F Installing the PowerVault 35F Understanding the PowerVault 35F Configuration Configuring the PowerVault 35F Troubleshooting Getting Help Ethernet Pin Assignments Fibre Channel Interface and Commands SCSI Interface and Commands Addressing, Structures and Operation Management Information Base (MIB) Regulatory Notices Warranties, Return Policy, and Year 2000 Compliance Sample Configuration Examples Glossary

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, PowerVault , and DellWare are trademarks of Dell Computer Corporation; UNIX is a registered trademark of UNIX System Laboratories, Inc., a wholly owned subsidiary of Novell, Inc.; Microsoft and Windows NT are registered trademarks of Microsoft Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

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Contents: Dell PowerVault 35F User's Guide

Initial release: February 1999

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Safety Instructions: Dell PowerVault 35F User's Guide

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Safety Instructions: Dell PowerVault 35F User's Guide

Alert Messages | Laser Safety | Product Information

Alert Messages

WARNING: A WARNING denotes a hazard that can cause personal injury.

CAUTION: A CAUTION denotes a hazard that can cause hardware or software damage.

NOTE: A NOTE denotes information that might be of special interest. A note can point out exceptions to rules or procedures.

Grounding

This product is a Safety Class 1 product and has a protective earthing terminal. There must be an uninterruptible safety earth ground from the main power source to the product’s input wiring terminals, power cord, or supplied power cord set. Whenever it is likely that the protection has been impaired, disconnect the power cord until the ground has been restored.

Servicing

Any servicing, adjustment, maintenance, or repair must be performed only by authorized service-trained personnel. There are no operator serviceable parts in this product.

Warranty

If you have any questions about the warranty of this product, contact a Dell sales representative.

Laser Safety

Certification and Classification Information

This product uses Gigabit Interface Converters (GBIC) to interface with Fibre Channel links. Optical GBICs shipped with this product contain internal lasers. In the USA, all optical GBICs shipped with this unit are certified as Class 1 laser products and conform to the requirements contained in the Department of Health and Human Services (DHHS) regulation 21 CFR Subchapter J.

Outside the USA, all GBICs are certified as Class 1 laser components that conform to the requirements contained in the International Electrotechnical Commission (IEC) standard 825 (1994) and Amendment 1 (1990) along with the CENELEC (European Committee for Electrotechnical Standardization) European Normalization standard EN 60825 (1992).

If other then the shipped optical GBICs are used with this product then the user is required to insure that the optical

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Safety Instructions: Dell PowerVault 35F User's Guide

GBIC being used meets all of the above requirements. If the GBIC is not certified then this product’s laser safety

certification becomes null-and-void. Certifications include one or more of the following:

Recognized Component by Underwriters Laboratories Certified by the Canadian Standard Association Certified by VDE (Germany) and/or Certified by Statens Provningsanstalt (SP) in Sweden

The following shows the Class 1 information label specified in IEC 825 and CENELEC HD 482 51. This label is attached to this product.

Class 1 Laser Product Laser Klasse 1 Luckan 1 Laserlaite

The following information provides the typical operational parameters for the Optical Laser GBIC included with the PowerVault 35F.

Laser Information

Parameter Shortwave Longwave

Nomenclature 100-M5-SN-I 100-SM-LC-L Spectral Centre

770-850nm 1300nm

Wavelength Operating Range 2m-500m 2m-10km Launch Power Max 1.3 dBm -3 dBm Launch Power Min -7 dBm Receive Power Min -13 dBm -20 dBm Receive Power Max 1.3 dBm -3 dBm Extinction Ratio 6 dB 9 dB TX Deterministic Jitter 20 ps 20 ps Fibre Diameter 50um 9um Class Multimode Single-mode Nominal Bit Rate 1062.5

1062.5 Mbaud

Mbaud

OFC none none

NOTE: Class 1 Laser Products are not considered hazardous.

Product Information

Each Fibre Channel communications port consists of a transmitter and receiver optical subassembly. The transmitter subassembly contains internally a semiconductor laser diode in the wavelength of 780 or 1300 nanometers.

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Safety Instructions: Dell PowerVault 35F User's Guide

WARNING: There are no user maintenance or service operations or adjustments to be performed on any

of the GBIC modules.

Usage Restrictions

Failure to comply with these usage restrictions may result in incorrect operation of the system and points of access may emit laser radiation above the Class 1 limits established by the IEC and U.S. DHHS.

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Introducing the PowerVault 35F: Dell PowerVault 35F User's Guide

Ultra Wide SCSI for data transfer up to 40 MB/s per bus

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Introducing the PowerVault™ 35F: Dell PowerVault 35F User's Guide

The Dell™ PowerVault™ 35F is a Fibre Channel-to-SCSI bridge. The PowerVault 35F provides connectivity between a Fibre Channel environment and two Fast/Wide/Ultra SCSI buses.

Supported devices include:

Initiator Devices – Fibre Channel and SCSI hosts Sequential Access Devices – Tape drives Changer Devices – Tape Libraries

Figure 1. Front panel of the PowerVault 35F

Figure 2. Back panel of the PowerVault 35F

Features

Fibre Channel Features

Fibre Channel initiator and target modes Single 1.0625 Gbps port Fibre Channel Arbitrated Loop (FC-AL) and Switched Fabric (FC-SW) topologies Private Loop Direct Attach (PLDA) profile compliant Class 3 connection with SCSI-FCP protocol GBIC Support

SCSI Bus Features

SCSI initiator and target modes Two auto-negotiating SCSI buses (Narrow, Wide, Fast, Ultra)

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Introducing the PowerVault 35F: Dell PowerVault 35F User's Guide

Connection for up to 30 devices (15 per bus)

Simultaneous commands, tagged command queuing and disconnect/reconnect Middle of bus configuration with external termination SCSI-2 and SCSI-3 protocols 68-pin D shell, P type connectors High-voltage Differential support Tape and tape changer devices SCC, Indexed and Automatic addressing modes

Configuration Features

Serial RJ-11 connector for terminal access Ethernet RJ-45 connector for FTP, Telnet and Web browser access Easy field-upgradable firmware

Management Features

Out-of-band Ethernet TCP/IP SNMP with private MIB support

Specifications

Physical Specifications

Internal power supply with power switch and detachable power cord Fibre Channel activity LED SCSI Bus 1 activity LED SCSI Bus 0 activity LED Ethernet activity LED Power LED Fault LED Airflow with internal fan Desktop or optional rack mount enclosure

Physical Dimensions

Width 43.18cm (17.00 inches) Depth 22.82cm (8.98 inches) Height 4.31cm (1.70 inches, 1U) Weight 3.18 kg (7 lbs)

Operating Environment

5 to 40 °C 5 to 80% Relative Humidity (non-condensing)

Non-operating Environment

-40 to +55 °C 0 to 92% Relative Humidity (non-condensing)

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Introducing the PowerVault 35F: Dell PowerVault 35F User's Guide

Power

100 - 240 VAC, Auto Sensing 50/60 Hz, 1.0 Amps

PowerVault 35F Benefits

Point-to-Point

Single initiator to single target

Single Initiator

Single initiator to multiple targets

Multi-Initiator

Multiple initiators to single or multiple targets

Connectivity – SCSI devices may be attached to Fibre Channel storage networks to share data and increase address space.

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Introducing the PowerVault 35F: Dell PowerVault 35F User's Guide

Distance – SCSI cable length from hosts to devices is increased from 25m to 10,000m, facilitating remote or disaster tolerant sites.

Performance – 100 Mbytes/sec Fibre Channel (200 Mbytes/sec bi-directional) offers increased bandwidth when distributing data across multiple SCSI devices.

Reliability – Low error rates, robust error recovery and flow control provide an enterprise with reliable data delivery. Scalability – Point-to-point links can be expanded to multi-initiator links supporting interconnected servers, tape

drives and tape libraries.

Flexibility – The PowerVault 35F allows Fibre Channel initiators to communicate with SCSI targets. Consolidation – The PowerVault 35F allows multiple servers to share storage resources, including tape drives and

tape libraries. Centralization – The PowerVault 35F enables existing storage to be moved to a central location to simplify

management and maintenance, and to improve security. Lower TCO – Improving storage management, maintenance and security can lower Total Cost of Ownership (TCO)

for enterprise storage.

How the PowerVault 35F Works

The PowerVault 35F is a storage bridge that translates Fibre Channel Protocol (FCP) to and from two SCSI buses so devices on these two types of media can communicate with each other. It attaches to a Fibre Channel host, and transfers the command, data, and status information to SCSI targets. The host passes packets to SCSI targets as if the PowerVault 35F were just another device along the path.

The PowerVault 35F provides connections for two SCSI buses into a Fibre Channel environment. It takes advantage of Fibre Channel’s ability to encapsulate SCSI protocol packets to allow a host with a Fibre Channel adapter to access SCSI peripheral devices transparently over a Fibre Channel connection.

Figure 3. Fibre Channel-to-SCSI configuration

Figure 3 shows a Fibre Channel-to-SCSI configuration. Through the PowerVault 35F bridge, any host on the Fibre

Channel loop can access the tape drive and library on each SCSI bus.

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Introducing the PowerVault 35F: Dell PowerVault 35F User's Guide

Operating as Both a SCSI and Fibre Channel Device

The bridge is both a SCSI and Fibre Channel device operating on a SCSI bus and Fibre Channel network simultaneously.

The SCSI Side

On a SCSI bus, the PowerVault 35F acts as a SCSI initiator passing requests from hosts on the Fibre Channel network to target devices on the SCSI bus. Each PowerVault 35F SCSI bus uses a single SCSI ID. The default ID is 7 and can be changed when configuring the PowerVault 35F.

The Fibre Channel Side

In a Fibre Channel loop, the PowerVault 35F is identified by a single Arbitrated Loop Physical Address (AL_PA) or a fabric assigned Source ID. Once the address is acquired, any host on the Fibre Channel loop can access the devices on a SCSI bus transparently over a Fibre Channel connection.

Mapping Devices

To allow Fibre Channel and SCSI devices to address each other, the PowerVault 35F creates a table that maps device identifiers between Fibre Channel and SCSI. During PowerVault 35F configuration, you can choose the mapping method and, in certain cases, customize the device mappings. See

Understanding the PowerVault 35F Configuration

for more information about address modes and their configurations.

Processing SCSI Information

The following describes how the bridge processes SCSI information:

1. A Fibre Channel host issues a command. The Fibre Channel host encapsulates the command in the Fibre ChannelP protocol and sends the packet to the PowerVault 35F.

2. The Fibre Channel port in the PowerVault 35F receives the packet, interprets the Fibre Channel information, and places the packet in buffer memory.

3. The PowerVault 35F’s processor interprets the information and programs a SCSI controller to process the transaction.

4. The SCSI controller sends the command to the SCSI device (target).

Figure 4. Information processing

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5. The target interprets the command and prepares to either read or write data.

6. Data flows between the host and target through payload buffers.

7. Response information flows from the SCSI target back to the Fibre Channel host.

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Installing the PowerVault 35F: Dell PowerVault 35F User's Guide

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Installing the PowerVault 35F: Dell PowerVault 35F User's Guide

Location | Unpacking the Box | Interfaces and Connections | Fibre Channel Connection | GBIC Installation

| Connecting the PowerVault 35F to a Fibre Channel Storage Area Network | SCSI Connection | Ethernet

Connection | Serial Port Connection | Autobaud Feature | Connecting the Power Cord

This section describes how to setup and install the Dell™ PowerVault™ 35F. This includes unpacking the PowerVault 35F for the first time, factors to consider when installing the PowerVault 35F and connecting to different types of devices. Read this section carefully and completely before working with the PowerVault 35F.

A number of factors need to be considered in planning the installation of the PowerVault 35F. These factors include the location of the unit, the use of the unit, and the type of devices to which the unit will be attached.

Location

The PowerVault 35F bridge can be placed on a desktop or mounted in a standard Dell rack depending on the specific requirements of the installation. The operating environment should meet the requirements found in Introducing the

PowerVault 35F. If you plan to use the bridge on a tabletop, attach the stick-on feet to the bottom of the bridge to

protect the surface.

NOTE: The PowerVault 35F contains a cooling fan mounted in the rear of the enclosure and intake vents on the front of the enclosure. The rear fan vent and the front intake vents should remain clear of obstructions to ensure proper airflow.

Unpacking the Box

1. Remove all items from the shipping container. Check each one for damage. Keep the PowerVault 35F in the protective bag until you are ready to install it.

2. Refer to the packing slip or contents list to make sure you received all the equipment you ordered. If an item is missing, contact your Dell sales representative immediately.

3. Select a location that ensures the front intake vents and rear fan are clear of obstructions so air flows freely through the bridge.

4. Do not connect any devices or cables to the PowerVault 35F until the device is secured in a Dell rack or placed securely on a flat, level surface.

Interfaces and Connections

There are four types of physical interfaces to the PowerVault 35F:

Fibre Channel SCSI RS-232 (Serial port) Ethernet

The RS-232 and Ethernet ports are used primarily for PowerVault 35F configuration and management. MIB information for each interface is discussed in Management Information Base (MIB).

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Figure 1. Port locations

Fibre Channel Connection

Before connecting the PowerVault 35F to other Fibre Channel devices, it is important to understand the configuration requirements of the environment to which it will be connected. Failure to correctly configure a Fibre Channel device may impair the operation of the storage area network to which it is attached.

Typical installations will have the PowerVault 35F connected to a switched fabric environment. In Fibre Channel switched environments, the switch is directly attached to the PowerVault 35F.

Figure 2. Configurations with tape library

Switches may allow for individual ports to be configured for different media types. The PowerVault 35F must be connected to a switch port with a shortwave multi-mode fiber (1.0625 Gbaud Dual SC) connector.

GBIC Installation

The PowerVault 35F ships with a Gigabaud Interface Converter (GBIC) installed. If it is not already installed, follow the instructions below to install your GBIC in the PowerVault 35F.

WARNING: The PowerVault 35F has been qualified with a specific set of GBICs. Using a GBIC that has

not been qualified by Dell may cause the PowerVault 35F to operate improperly.

1. Remove GBIC from packaging.

2. Locate the Fibre Channel port on the back of the PowerVault 35F.

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Figure 3. Fibre Channel port

3. Firmly insert the GBIC into the Fibre Channel port until you feel it snap into position.

Figure 4. GBIC without rubber protector

The GBIC should be protected by a rubber cap. Keep this cap in place until you’re ready to connect the PowerVault 35F to a Fibre Channel environment.

To remove the GBIC, lift the metal latch and pull outward, or use the appropriate extraction tool.

Connecting the PowerVault 35F to a Fibre Channel Storage Area Network

Follow the directions below to connect the PowerVault 35F to a Fibre Channel SAN.

1. Locate the Fibre Channel port on the back of the PowerVault 35F.

Figure 5. Fibre Channel port

2. Remove the rubber cap from the GBIC, as shown in Figure 8, and push the metal latch down to lock it into place.

Figure 6. Removal of GBIC cap

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WARNING: The PowerVault 35F has been qualified with a specific set of GBICs. Using a GBIC that

has not been qualified by Dell may cause the PowerVault 35F to operate improperly.

3. With the PowerVault 35F powered off, connect the PowerVault 35F into your Fibre Channel environment using the appropriate cabling. The connectors on the PowerVault 35F are keyed. Be sure to insert the cable connectors in the proper orientation.

SCSI Connection

The PowerVault 35F supports Fast/Ultra Wide SCSI. The PowerVault 35F is factory configured to support a Differential SCSI bus. Two 68-pin D-shell connectors are located on the rear panel of the unit, allowing the unit to be attached in the middle or at the end of a SCSI bus. If the PowerVault 35F is located at one end of the SCSI bus, an external terminator should be installed. Two terminators are provided with the PowerVault 35F.

Differential SCSI support is indicated by this symbol on the rear of the PowerVault 35F.

NOTE: The PowerVault 35F only supports Differential SCSI cables and terminators. Single-Ended SCSI

connectors and LVD SCSI connectors are not supported.

The PowerVault 35F supplies termination power (TERMPWR) on each SCSI bus. A self-resetting fuse is used that will reset after the fault is cleared.

To connect the PowerVault 35F to a SCSI bus:

1. Power off your SCSI devices and the PowerVault 35F.

2. Connect a SCSI cable to one of the SCSI connectors on the back of the bridge.

3. Connect the other end of the SCSI cable to the next SCSI device on the bus. It is recommended that tape devices be evenly distributed between SCSI buses for best performance.

4. If the PowerVault 35F is at the end of the SCSI bus, place the terminator provided with the bridge on the PowerVault 35F’s other SCSI connector on the same bus. If the bridge is not at the end of the bus, attach a second SCSI cable to the other SCSI connector. Connect this cable to the next device on the bus.

Figure 7. PowerVault 35F SCSI connection

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5. Make sure each bus is terminated correctly. The devices at each end of each bus must be terminated. Typically the lower connectors are terminated, as shown in Figure 8.

Figure 8. SCSI terminator

NOTE: Power on all SCSI devices and the PowerVault 35F before powering on the switch or any of the

devices in the Fibre Channel environment to ensure SCSI devices are detected.

6. Power on your SCSI devices and allow time to initialize.

7. After all the SCSI devices have completed their individual POSTs, power on the PowerVault 35F.

NOTE: There may be several moments before the PowerVault 35F appears to be functioning after the unit

is powered up. This is normal and does not indicate a faulty unit.

8. Power on the switch and any Fibre Channel devices last.

NOTE: See Sample Configuration Example for sample configuration examples.

Ethernet Connection

10BaseT Ethernet connectivity is used to provide enhanced management and configuration capabilities. The RJ-45 connector on the unit can be directly connected to a standard 10BaseT Ethernet network.

NOTE: The PowerVault 35F only supports a 10BaseT Ethernet network connector. 100BaseT Ethernet is not

currently supported.

Configuration is required to set the IP network address to allow for use of the configuration capabilities of this port. Refer to Configuring the PowerVault 35F for details on setting the IP network address.

NOTE: The PowerVault 35F contains a unique Ethernet MAC address that is assigned during the manufacturing

process.

Ethernet capabilities include Telnet for configuration, FTP and TFTP for firmware upgrades, and SNMP for configuration and management.

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Figure 9. PowerVault 35F Ethernet port

Serial Port Connection

The RJ11 connector on the rear panel of the PowerVault 35F provides an RS-232 connection that can be used to configure the PowerVault 35F, monitor diagnostic status, or to update the program stored in the PowerVault 35F’s Flash memory. A cable is provided with the unit to connect to a DB-9 serial connection. Further information on the operations allowed via the RS-232 port is provided in Configuring the PowerVault 35F.

The RS-232 port operates with the following settings:

Baud Rate: Autobaud (9600, 19200, 38400, 57600, or 115200) Data Bits: 8 Stop Bits: 1 Parity: None Flow Control: None

Figure 10. PowerVault 35F Serial port

Autobaud Feature

The autobaud feature automatically configures the baud rate on the PowerVault 35F on initial connection. Once you set the baud rate in the terminal emulation program, wait until the PowerVault 35F completes the Power On Self Test (POST) and then the Firmware Initialization process. This can take up to 90 seconds. Then press the Enter key five or six times and the PowerVault 35F will automatically detect the baud rate and configure the bridge.

NOTE: The baud rate is then saved in the PowerVault 35F’s configuration and will be retained through future

power cycles.

NOTE: Hitting the Enter key before the POST has completed has no effect on the autobaud feature. Wait until both the POST and the Firmware Initialization processes have completed before hitting the ENTER key. This may take up to 90 seconds.

The baud rate in the terminal emulation program must be set at 9600, 19200, 38400, 57600, or 115200 for the autobaud feature to recognize it. The PowerVault 35F will not function properly at any other baud rate.

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Installing the PowerVault 35F: Dell PowerVault 35F User's Guide

Connecting the power cord

The PowerVault 35F is shipped with the appropriate power cord for use in your region or country.

To connect the power cord to the PowerVault 35F:

1. Make sure the PowerVault 35F’s power is switched off. See Fig. 11 for the location of the power switch on the back of the bridge.

2. Connect the appropriate end of the power cord to the power connector on the back of the PowerVault 35F.

3. Plug the three-pronged end of the power cord into the power source.

Figure 11. PowerVault 35F power switch and outlet

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Understanding the PowerVault 35F Configuration: Dell PowerVault 35F User's Guide

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Understanding the PowerVault 35F Configuration: Dell PowerVault 35F User's Guide

Of primary importance in configuring the Dell™ PowerVault™ 35F is determining the mode of operation required. The unit can be configured to support Fibre Channel hosts communicating with SCSI targets. The default configuration of the unit allows for Fibre Channel hosts to connect to SCSI targets. Configuration is needed in some cases to modify the method in which this occurs, as well as to support SCSI hosts communicating with Fibre Channel targets. Other functions and features can be configured as well, and are discussed further in this section.

A typical configuration would have a Fibre Channel host connecting either via a Fiber Channel switch, or directly to the PowerVault 35F, with SCSI target devices attached to the PowerVault 35F. These configurations, using a tape library and drives, are represented in Figure 1.

The factory default configuration of the unit allows such a configuration to work without further configuration in most cases. It should, however, be recognized that more complex installations or specific application requirements may require one or more configuration elements to be changed from the default settings.

Figure 1. Configurations with tape library

An understanding of the basic characteristics of Fibre Channel and SCSI devices is recommended before configuring the PowerVault 35F.

General Fibre Channel Configuration

On a Fibre Channel arbitrated loop, the PowerVault 35F appears at a single Arbitrated Loop Physical Address (AL_PA). Fibre Channel devices support two methods for obtaining an AL_PA, these being soft or hard addressing. The PowerVault 35F can be configured to use soft addressing (default) or hard addressing with a selected value.

Soft Addressing

When acquiring a soft address, the PowerVault 35F acquires the first available loop address starting from address 0. In this mode, the PowerVault 35F automatically obtains an available address and participates on the loop, as long as there

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is at least one address available on the loop that is connected to the PowerVault 35F. Fibre Channel supports up to 126

devices on an arbitrated loop.

Hard Addressing

When acquiring a hard address, the PowerVault 35F attempts to acquire the AL_PA value that was specified by user configuration. If the desired address is not available at loop initialization time, the PowerVault 35F comes up on the loop in non-participating mode. This allows the loop to continue to operate, although the unit will not be accessible via the Fibre Channel interface. This would occur when another device on the arbitrated loop has acquired the same address as that configured on the PowerVault 35F.

Hard addressing is recommended for environments where it is important that the device addresses do not change. Device address changes can affect the mapping represented by the host operating system to the application, and have adverse effects. An example of such an environment would be a tape library installation, where the application configuration requires fixed device identification for proper operation. Hard addressing will insure that the device identification to the application will remain constant.

When connected to a Fibre Channel Switch, the PowerVault 35F is identified to the switch as a unique device by the factory programmed World Wide Name (WWN). No further configuration is needed, although the WWN can be configured to a user-defined value through the configuration interface.

General SCSI Configuration

The PowerVault 35F appears on each SCSI bus as a single initiator. The default initiator ID is 7, and can be set via configuration to any valid SCSI address. No other devices on the SCSI bus may use this address.

The PowerVault 35F provides the capability to reset the SCSI buses during the boot cycle. This allows the devices on a SCSI bus to be in a known state. Configuration allows this feature to be enabled or disabled. This feature is enabled in the default configuration. Configurations using multiple devices that have long reset cycles, or are adversely affected by bus resets, should disable this feature.

The PowerVault 35F negotiates for the maximum values for transfer rates and data width on a SCSI bus. If an attached device does not allow the full rates, the unit will use the rates negotiated for that device. Negotiation is on a device specific basis, so the unit can support a mix of device types on the same bus.

Fibre Channel Host to SCSI Target Configuration

This section describes the configuration of the PowerVault 35F when acting as a target to a Fibre Channel Initiator, passing Fibre Channel Protocal (FCP) requests through to SCSI target devices.

This is configured as the default, using soft addressing on the Fibre Channel loop and auto addressing for the target device mapping. Auto addressing is described further in this section.

The PowerVault 35F automatically detects if it is connected to an FL or F_Port, and will use the appropriate type without further configuration.

Address Mapping

The PowerVault 35F supports three addressing methods for mapping SCSI targets to Fibre Channel Hosts:

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Indexed Addressing – Allows you to edit and maintain a static address mapping table.

(…) (…)

Auto Addressing – Automatically creates a new address mapping table every time the PowerVault 35F is power cycled. SCC Addressing – Implements the SCSI-3 Controller Commands SCSI storage array addressing to address SCSI devices attached to the PowerVault 35F.

SCSI Targets are selected by mapping the appropriate values into the FCP LUN field, and correlating a Fibre Channel LUN value to a SCSI Bus:Target:LUN value. The PowerVault 35F acts as a single initiator on each SCSI bus, defaulting to ID 7. All commands passed through to a SCSI bus originate from this SCSI ID.

NOTE: The SCSI bus number corresponds to the physical SCSI ports on the back of the PowerVault 35F. For

example, SCSI bus 0 corresponds to SCSI port 0 on the rear of the PowerVault 35F. SCSI bus 1 corresponds to SCSI port 1.

Indexed Addressing

Indexed Addressing allows for generic Fibre Channel host bus adapters to access SCSI devices attached to the PowerVault 35F. This is done by use of a table which is indexed by sequential FCP LUN values, indicating selected BUS:TARGET:LUN devices.

Table 1. Indexed Addressing Table

FCP LUN Value SCSI

BUS:TARGET:LUN

0 0:0:0 1 0:1:0 2 0:2:0 3 0:3:0 4 0:4:0 5 0:5:0 6 0:6:0

0:7:0 occupied by initiator

ID 7 0:8:0 (…) (…) 14 0:15:0 15 0:0:1 16 0:1:1

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Understanding the PowerVault 35F Configuration: Dell PowerVault 35F User's Guide

SCSI Fibre Channel

The Indexed Addressing table has the structure shown in Table 1. The PowerVault 35F will allow up to 80 device entries to be mapped. The index table can be manually edited, and is then saved to FLASH memory. A configuration menu allows for the table to be filled in order of increasing target, or LUN, as may be desired for the specific requirements needed. An assist is also provided to perform device discovery, and fill the table in the order that devices are discovered on a SCSI bus.

Indexed Addressing mode is recommended for environments where device configuration may change, and a fixed mapping from the application to the target devices is required. An example of such an environment is where hot plug devices may be used, thereby changing the order of devices on a SCSI bus.

Auto Addressing

The Auto Addressing option is similar to Indexed Addressing, but with the distinction that the table used is created through SCSI device discovery upon power up or reset, and not otherwise retained. As the unit performs device discovery on a SCSI bus, the Index table is filled with adjacent FCP LUNs referencing each subsequent SCSI device. The host system will then detect every attached device without voids, allowing full device discovery to the host. This allows easy configuration in environments where device ordering is not important, and hot plugging of SCSI devices will not occur. Configuration allows for discovery to be performed in order of target or LUN, as desired for the specific environment.

Auto Addressing, target mode is configured as the default mode of thePowerVault 35F.

SCC Addressing

The PowerVault 35F implements the SCSI-3 Controller Commands (SCC) (X3T10 Project 1047D Revision 6b 01July-96) ) SCSI storage array addressing to address SCSI devices attached to the PowerVault 35F. The Access Method used is the SCC Logical Unit Addressing method.

In SCC Addressing mode, the PowerVault 35F will respond to FCP commands, as in a SCC controller device. A subset of the SCC behavior is implemented. LUN mappings corresponding to the SCC Peripheral Device Addressing are interpreted as controller commands, and are acted on by the PowerVault 35F directly. LUN mappings using SCC Logical Unit addressing are routed to the appropriate SCSI BUS:TARGET:LUN and processed accordingly.

The SCC mode requires support from the HBA and device drivers for proper operation. Further description of the PowerVault 35F implementation of SCC addressing is in Addressing, Structures and Operation.

SCSI Host to Fibre Channel Target Configuration

This section describes the configuration of the PowerVault 35F when acting as a target to a SCSI Initiator, passing requests through to Fibre Channel targets.

SCSI-to-Fibre Channel mapping is implemented in a fashion similar to Fibre Channel-to-SCSI Indexed Addressing mode. The PowerVault 35F responds to commands issued to a set of configured SCSI IDs, and maps these to Fibre Channel AL_PA/LUN values. The following table indicates a possible mapping for SCSI LUN to Fibre Channel AL_PA:LUN.

Table 2. SCSI-to-Fibre Target:Channel Address Mapping

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Understanding the PowerVault 35F Configuration: Dell PowerVault 35F User's Guide

Bus:Target:LUN AL_PA LUN

0:0:0 0xEF 0 0:1:0 0x02 0 0:2:0 0x04 0 0:3:0 0x08 0 0:4:0 0x0F 0 0:4:1 0x10 0 0:4:2 0x17 0 0:4:3 0x18 0

The Index Table is edited to represent the desired mapping, and saved to FLASH memory. In addition to configuring the address mapping, SCSI-to-Fibre Channel mode requires that a SCSI interface on the

PowerVault 35F be configured to respond to specified SCSI IDs. This is done through the SCSI configuration menu. Target ID’s enabled for the PowerVault 35F must be unique on the SCSI bus, with the exception that the initiator ID used on the PowerVault 35F should also be used as a single target ID. For example, in SCSI-to-Fibre Channel mode, one of the targets must have the same ID as thePowerVault 35F.

NOTE: The initiator and target ID’s must be assigned before the address table can be configured.

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Configuring the PowerVault 35F: Dell PowerVault 35F User's Guide

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Configuring the PowerVault 35F: Dell PowerVault 35F User's Guide

| Advanced Options | Reboot | Web Management Interface | Web Management Interface Menu Map

A menu structure is used to configure the DellTM PowerVaultTM 35F through the serial, Telnet, and web management interfaces. The selected menu and the firmware version currently executing will be displayed. Menu items are selected by entering the number of the menu desired, and exited by entering an ‘X’. In general, the configuration options present in the serial interface correspond to those available through SNMP and Telnet.

NOTE: Menus are not case sensitive. You can enter uppercase and lowercase characters interchangeably when

selecting from menus.

The PowerVault 35F Configuration Program allows the user to control many configuration settings through the PowerVault 35F serial interface. Among these are:

Baud rate of the serial port Fibre Channel address SCSI initiator and target IDs Ethernet IP and MAC addresses Fibre Channel-to-SCSI mapping SCSI-to-Fibre Channel mapping Trace level settings

Configuration settings may be changed and saved.

NOTE: Unless otherwise indicated, all configuration options set do not take effect until the next boot cycle of the

PowerVault 35F unit.

Operation Indicators

The PowerVault 35F bridge is equipped with rear panel LED indicators for monitoring overall bridge status. The LED functionality is detailed below:

Power - This green indicator turns on when power is applied to the bridge. Fault - This amber indicator lights up during POST, then remains dark unless the PowerVault 35F experiences a processor problem. SCSI 1 - This green indicator signifies SCSI 1 activity when lit. SCSI 0 - This green indicator signifies SCSI 0 activity when lit. Fibre Channel - This green indicator signifies Fibre Channel activity when lit. Ethernet - This green indicator signifies Ethernet activity when lit.

Figure 1. PowerVault 35F LED’s

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Configuring the PowerVault 35F: Dell PowerVault 35F User's Guide

Host Device Configuration

The host system using a Fibre Channel Host Bus Adapter (HBA) will typically map Fibre Channel devices into the existing device mapping scheme used by that operating system. This usually results in the Fibre Channel HBA mapping Fibre Channel AL_PA’s to SCSI target addresses. The HBA will claim enough SCSI bus entries to allow for 125 Fibre Channel targets to map to SCSI Bus:Target entries. This is usually done by a fixed mapping of AL_PA to Bus:Target. In such a configuration, the PowerVault 35F corresponds to a Bus:Target identifier, with the SCSI devices attached to the PowerVault 35F appearing as logical units (LUNs). In addition, some operating systems can extend the available SCSI limit of 15 per bus.

Although this is not an issue for the operating system or most applications, there are cases where older applications can have expectations about what are valid SCSI ID’s, and not deal correctly with certain mappings. In particular, applications have been seen to have difficulties addressing target ID’s greater than 15 (e.g. 16 and up). This problem can be resolved by configuring the PowerVault 35F to use hard addressing, and setting the AL_PA used by the unit to a value that the HBA will map to an ID with a value less than 16.

For example, depending on the Fibre Channel HBA, if the hard AL_PA selection is 1, the address is 1. If the selection is 125, the AL_PA address is 0xEF. Some Fibre Channel HBA’s will configure differently, so verify the AL_PA by toggling to hard addressing and selecting an address.

Device Management

The PowerVault 35F can be managed through the RS-232 port, over Ethernet via Telnet or a web browser, or via SNMP. FTP and TFTP are also supported for firmware downloads.

Serial

The serial port allows for configuration of all device characteristics.

Ethernet

The 10BaseT Ethernet port must first be configured via the serial port with an appropriate IP address and subnet mask prior to use unless the default values are to be used. Default values are IP address 1.1.1.1, and a subnet mask of

255.255.255.0.

NOTE: The PowerVault 35F only supports a 10BaseT Ethernet network connector. 100BaseT Ethernet is not

currently supported.

SNMP

The PowerVault 35F includes SNMP management support. SNMP is transported via the Ethernet connection (10BaseT port). SNMP support allows configuration and management using any standard SNMP management tool. SNMP data is defined in the SNMP MIB. Dell provides a private MIB for configuration of the PowerVault 35F. The Dell private MIB includes all objects configurable from the terminal user interface. The Dell private MIB also includes some Fibre Channel and SCSI statistics which are not accessible via the serial interface. SNMP support also includes Traps, which

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Configuring the PowerVault 35F: Dell PowerVault 35F User's Guide

are used to notify a SNMP management console of various conditions.

The objects defined in the Dell private MIB are specific to Dell’s products. For a copy of the Dell private MIB, go to the Dell Web site (www.dell.com) or find the MIB information on the CD supplied with the unit.

Web Management Interface

The PowerVault 35F uses any standard web browser to manage and configure the unit. Enter the IP address of the PowerVault 35F as the URL to access the management interface.

Communicating with the PowerVault 35F

The PowerVault 35F is designed to function directly out of the shipping container with no special configuration required. However, you have the ability to monitor various aspects of the PowerVault 35F’s performance by connecting a terminal or terminal emulator to the serial port on the rear of the bridge.

The PowerVault 35F is designed to communicate with any operating system that utilizes a terminal emulator. For example, you can use Hyperterminal on Windows NT 4.0. If your computer uses another operating system, be sure the baud rate, data bits, stop bits, parity, and terminal emulation are set as specified in Table 1.

Table 1. Connection properties

Type Setting

Baud rate 9600, 19200,

38400, 57600, or

115200 Date bits 8 Parity None Stop bits 1 Flow control None

NOTE: For more information on the Autobaud feature, see Installing the PowerVault 35F.

Setting Up Serial Port Communications

Leave the PowerVault 35F turned off until you have set up serial port communications with your host computer. To set up serial communications with the PowerVault 35F:

1. Plug the serial cable provided with the PowerVault 35F into one of your computer’s serial ports (for example, COM1 or COM2) and the PowerVault 35F’s serial port.

2. Start your terminal interface program.

3. Set the terminal interface program to use the appropriate COM port.

4. Specify the following settings for the port:

Baud rate: 9600, 19200, 38400, 57600, or 115200 Data bits: 8

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Configuring the PowerVault 35F: Dell PowerVault 35F User's Guide

Parity: None

Stop bits: 1 Flow control: None

5. Power on the PowerVault 35F and allow time for the unit to initialize.

NOTE: Before powering on the PowerVault 35F, make sure all the devices on each SCSI bus are powered on and

have finished performing their self tests. The devices on your Fibre Channel Storage Area Network should be powered on also.

Configuring the PowerVault 35F’s Ethernet Port

If you plan to use Ethernet to configure the PowerVault 35F, you must first set up serial communications with the PowerVault 35F to configure the Ethernet port’s address.

The PowerVault 35F provides an Ethernet port for connection to a standard 10BaseT Ethernet network. You can use Ethernet to perform the following activities:

Configure the PowerVault 35F through Telnet. The configuration menus accessed via the serial port will be disabled when a Telnet session is connected. When logging in for a Telnet session, the default user name is "root" and the default password is "password". Upgrading the PowerVault 35F’s firmware. You can use FTP or TFTP to send a new firmware image to the PowerVault 35F.

NOTE: The PowerVault 35F only supports a 10BaseT Ethernet network connector. 100BaseT Ethernet is not

supported.

If you plan to use the Ethernet port, you must first configure its address. You can set the IP address and IP subnet mask. The IP address is used to route information in a TCP/IP network. The IP subnet mask is used to establish a path to a default TCP/IP gateway.

To change the Ethernet IP address or IP subnet mask, select 1) Ethernet/SNMP Configuration from the Configuration menu.

NOTE: The bridge must be rebooted for the new IP address to take effect.

Serial Interface Menu Map

The following section lays out the menu structure of the serial interface. The function of each menu item is described later in this section.

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