Service manual

Chapter 2 System Information
9
NOTE The boot order can be changed using the Netserver's (BIOS) Setup Utility and the
SCSI Select Utility.
Installed Mass Storage Devices
Table 2-1 lists the number and types of mass storage devices that may be installed into the HP Netserver LP
2000r.
Table 2-1. SCSI Mass Storage Device Types
Interface
Types
Max Number
of Devices
Installed Devices
and Addresses
Flexible disk
drive
1 Factory installed flexible disk drive
IDE-1 1* Factory installed CD-ROM drive (Primary IDE connector)
Ultra-160M SCSI
Channel A
up to 6 **
• Up to 6 Hot Swap SCSI hard disk drives
(addresses = ID 0, 1, 2, 3, 4, and 5)
• Embedded SCSI controller
(address = ID 7)
Ultra-160M SCSI
Channel B
up to 15 ** • Control of up to 15 external SCSI devices
* The primary IDE (IDE-1) cable is connected to the factory-installed CD-ROM drive. A secondary IDE connector
(IDE-2) is available on the system board, but is not supported by Hewlett-Packard.
** Both SCSI channels (A and B) can each support up to 15 devices; however, there are only enough internal
storage slots for six Hot Swap SCSI hard drives. Channel B is used to control external SCSI devices, typically a
SCSI tape backup device.
Hardware Mirroring
You may choose to mirror hard drives (RAID 0) in the HP Netserver's hot swap slots. Hardware mirroring can
help speed up disk access time.
To mirror hard drives in hardware, you need to install the HP NetRAID Controller board and use an additional
SCSI cable to connect the NetRAID board to the SCSI backplane connector. If you do not use HP's
NetRAID Controller board, make sure that you use a DAC with an LVD interface.
CAUTION To prevent damage to the Hot Swap SCSI hard disk drives, do not use a HVD (high
voltage differential) DAC controller.
If you are mirroring hard drives using the HP NetRAID Controller board, refer to "Installing the Optional SCSI
Accessory Cable" in the HP Netserver LP 2000r User Guide for instructions on how to install the SCSI cable
to the SCSI backplane connector. Refer to the documentation provided by the HP NetRAID PCI Controller
board for external cabling requirements.
Duplexing Hard Drives
You may choose to duplex the drives in the HP Netserver's removable hard disk drive cage. The Netserver
supports an option to duplex the drives using the embedded dual channel SCSI controllers (SCSI A and B).
There must be at least two SCSI drives available in the hard disk drive cage to duplex the drives. The
Netserver also supports HP's NetRAID 1Si PCI Controller board to control the two duplexed channels.