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Chapter 1 - Getting Started
Disk I/O Card
12
Disk I/O Card
The Disk I/O card is provided for drive channel expansion. By connecting daisy chained
OmniStor 4000F enclosures to the Disk I/O cards additional enclosures and drives can be
added to your system. This card’s design incorporates an active hub, and provides
automatic loop regeneration (LRC) and port bypass. The loop regeneration function will
“heal” the FC-AL (Fibre Channel-Arbitrated Loop) when components become
disconnected or faulty.
There are two Disk I/O cards installed at the rear of the enclosure adjacent to the cooling
fan bay. The upper Disk I/O card provides the connection to the “Loop 0” side of the disk
drives, and the lower Disk I/O card provides the connection to the “Loop 1” side of the
disk drives.
Each Disk I/O card supports Small Form-Factor Pluggable (SFP) cages to accept either
optical or copper transceivers. They are designed to support NCITS T11 Fibre Channel
compliant devices at speeds of 1.0625 Gb per sec or 2.125 Gb per second. The speed is set
through a hardware jumper (JP4) located on the Disk I/O card. Setting the jumper on both
pins will enable the 1 Gb/sec mode, likewise offsetting the jumper will enable the 2 Gb/sec
mode. An LED on the card will illuminate to indicate the 2 Gb mode.
Disk I/O Card
Содержание OmniStor 4900F Series
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Страница 38: ...Chapter 1 Getting Started Audible Alarm 24...
Страница 58: ...Chapter 2 Topologies and Operating Modes Application of Availability 44...
Страница 128: ...Chapter 3 Setup and Installation Powering Off the Storage System 114...
Страница 156: ...Chapter 5 Troubleshooting Problems During Bootup 142...
Страница 178: ...Chapter 6 Maintenance Replacing the Enclosure 164...
Страница 182: ...Appendix A Technical Information Specifications 168...
Страница 196: ...Index 182...