SL8500 - HBC 2A and 2B Port Speed and Host Settings

Asset ID:	1-79-1536185.1
Update Date:	2018-03-02
Keywords:

Solution Type Predictive Self-Healing Sure

Solution 1536185.1 : SL8500 - HBC 2A and 2B Port Speed and Host Settings

Applies to:

Sun StorageTek SL8500 Modular Library System - Version All Versions to All Versions [Release All Releases]
Sun StorageTek SL3000 Modular Library System - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Purpose

Explain host connection to the 2A and 2B ports on the SL8500 and SL3000 Modular Tape Libraries

Scope

All audiences

Details

There are two separate Ethernet connections on the HBC card for host to library communications—Ports 2A and 2B.
• Port 2A provides the Dual TCP/IP connection—this is an optional feature for SL8500 libraries.
• Port 2B provides the primary connection for host communications–this is the standard connection for SL8500/SL3000 libraries.

Both ports comply with the Institute of Electrical and Electronics Engineers standard–IEEE 802.3–for Ethernet networks.
Both ports are capable of auto-negotiating with the:
• Method of transmission
- Half-duplex: Transmits data in just one direction at a time
- Full-duplex: Transmits data in two directions simultaneously
- Speed of the transmission
- 10Base-T: 10 megabits per second (Mbps)
- 100Base-T: 100 megabits per second (Mbps)

A private network connection to an Ethernet hub or switch is recommended for maximum throughput and minimum resource contention when establishing a host connection to an SL8500 library.
Consult with the customer’s systems and/or network administrator for information about the network, routers, and IP addresses. When doing so, keep the following considerations in mind:
The simplest topology (a private network connection to a hub or switch) is often the best.

Simplification will:
- Offer maximum throughput
- Provide minimum resource contention
- Lend itself to higher security for library communication
- Supply the least expensive alternative
- Provide quick identification of any problems within the network

This is only a suggestion; however, the customer’s network and their desired topology are ultimately the determining factors. When a more complicated setup is required, consultation between the system administrator and Sun professional services may be necessary and are available.

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