IBM EXP15, Hardware Maintenance Manual

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Features
Modularized Components
High-capacity hard disk drives
Environmental Services Monitor (ESM) board
Power Supplies
Cooling Fans
Technology
Supports disk array technology
SCSI (LVD or SE) host interface
Redundant data storage, cooling system, and power system.
Hot-swap technology for hard disk drives, power supplies, and
fans
Automatic recovery after power failure without user
intervention
User Interface
Built-in power, Activity, and Fault indicators
Identification labeling on Customer Replaceable Units,
(CRUs), rear indicator lights, switches and connectors
Hard Disk Drives
Supports up to ten hard disk drives
Supports 2 channels per expansion unit
Supports 5 hard disk drives per channel
ESM Board
ID numbers
– Switch controlled for hard disk drive channel numbers: 1
and 2
– Switch On – Hard Disk Drive SCSI IDs: 0, 1, 2, 3, and 4
for both Channel 1 and Channel 2.
– Switch Off (default) – Hard Disk Drive SCSI IDs: 0, 1, 2,
3, 4, 8, 9, 10, 11, and 12 for Channel 1 or Channel 2.
Technology and Interfaces
– Model: SCSI, LVD, or single-ended
– SCSI bus interface: Two, 68-pin, VHDCI connectors for
incoming and outgoing SCSI bus cables
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IBM Netfinity EXP15, EXP200, EXP500 HMM