Sun Microsystems Cobalt LX50, Руководство пользователя

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Chapter 7: Specifications
7-4 User Guide—Sun Cobalt LX50 Server
SCSI Capabilities
• Supports up to three internal Ultra160 (160MB/s) LVDS hard drives
• Requires SCA (80-pin) drive connector
• LVDS signal interface
• Supports connection of external storage chassis through rear panel LVDS connector
• Supports optional zero channel RAID adapter in full size PCI slot
The server provides an embedded dual-channel SCSI bus through the use of the Adaptec AIC-7899W SCSI
controller, which is capable of supporting up to 160 MB/sec SCSI transfers. The AIC-7899W controller contains two
independent SCSI controllers that share a single 64-bit, 66-MHz PCI bus master interface as a multifunction device,
packaged in a 456-pin BGA.
Internally, each controller is identical and is capable of operation using either 16-bit SE or Low-Voltage Differential
(LVD) SCSI providing 40 MBps (Ultra-wide SE), 80 MBps (Ultra 2), or 160 MBps (Ultra 160/m). Each controller
has its own set of PCI configuration registers and SCI I/O registers. The server board supports disabling of the
on-board SCSI controller through the BIOS Setup menu. The internal SCSI slots are intended for use with Sun
Ultra160 LVDS SCSI hard disk drives.
The server provides active terminators, termination voltage, a resettable fuse, and a protection diode for both SCSI
channels. By design, the on-board termination is always enabled. No ability is provided to disable termination. Each
of the two SCSI channels has a connector interface. Channel A is an external high-density connector located on the
back edge of the server Main Board, and Channel B is a standard 68-pin internal connector.
Server Management Features
• Baseboard Management Controller (BMC), which provides monitoring, alerting, and logging of critical system
information obtained from embedded sensors on the server board. Also provides in band and out-of-band
Lights-out and remote-management capability.
• One rear-mount and one front-mount low-profile RJ-45 serial 2 port connection (compatible common serial line
concentrators (for example, Cisco and Lantronix).
• Five variable speed tachometer fans (in a single fan module) and thermal sensors throughout the server.
• Fault/Status LEDs located throughout the server board for simple fault isolation.
• Multiple server management headers providing on-board interconnects to server management features.
• SSI-compliant connectors for SSI interface support: front panel, floppy, and ATA-33.
• IPMI 1.5 and DMI 2.0 standard interfaces to management functions.
• Dedicated service partition on hard disk.
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Note : Sun Linux 5.0 supports neither hot-swapping nor hot-plugging.