Installing and Configuring
Mass Storage
The HP ProLiant ML150 server comes standard with an IDE CD-ROM and a flexible disk
drive with some configuration of SCSI hard drives. The internal mass storage can hold up to
five SCSI hard drives with cabling provided.
This section describes how to install the internal mass storage devices.
Mass Storage Configuration
Table 2-1 lists the number and types of mass storage devices that may be installed in the HP
ProLiant ML150 server.
Table 2-1: Mass Storage Device Types
Interface Types
Max Number
of Devices
Installed Devices and Addresses
Flexible disk drive
1
Factory installed flexible disk
Primary IDE
1
Factory installed CD-ROM drive (IDE connector)
Ultra-320 SCSI
Channel A
up to 15 *
Control of up to 15 external SCSI devices
Ultra-320 SCSI
Channel B
up to 5*
Up to 5 SCSI hard drives (addresses = ID 0, 1, 2, 3, 8)
Embedded SCSI controller (address = ID 7)
*Both SCSI channels (A and B) can each support up to 15 devices; however, there are only
enough internal storage shelves for five hard drives and one optional tape backup device.
Channel A is used to control external SCSI devices or internal backup tape.
Guidelines
General Guidelines
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Be careful when unpacking and handling the disk drives.
The hard drives are very susceptible to mechanical shock and can be easily damaged by a
drop as short as one-quarter of an inch. If the drop would crack an egg, it will damage the
drive.
Do not stack drives.
Do not use high voltage differential (HVD) SCSI devices on any of the SCSI channels or
damage will occur. Use only Single-Ended (SE) or Low-Voltage Differential (LVD)
devices.
The server is internally limited to 5 hard drives.
The flexible disk drive and CD-ROM drive, which are standard on all models of the HP
ProLiant ML150 server, occupy shelves 8 and 7 respectively. Refer to Figure 2-5 and
Figure 2-6
HP ProLiant ML150 Server Operations and Maintenance Guide
2-5
HP CONFIDENTIAL
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