HP Kayak XU 04xx HP Kayak XU PC Workstation Technical Reference Manual Hardwar - Page 29

Integrated Drive Electronics (IDE)

Get HP Kayak XU 04xx PDF manuals and user guides View all HP Kayak XU 04xx manuals
Add to My Manuals
Save this manual to your list of manuals

Page 29 highlights

2 System Board Devices on the PCI Bus of five internal wide-SCSI hard drives are supported. By default, the internal SCSI bus is configured to run in Ultra-SCSI mode (providing a maximum band-width of 40 MB/s). The user may configure the SCSI system using the SCSISelect utility, included in the system BIOS. This utility is described in more detail in the User's Guide. SCSI-configured-automatically (SCAM) support is provided at level 2, for Plug and Play. However, hot swap is not supported. The controller is BBS compliant. The Ultra-wide SCSI controller and cable supports RAIDport PCI devices such as the HP FastRAID solution (refer to page 38). AIC-7860 Narrow (8-bit) The Adaptec AIC-7860 Narrow SCSI PCI controller is integrated on the SCSI controller system board. The data transfer rate is 20 MB/s on an 8-bit single-ended bus. It is fitted with a 8-bit SCSI cable with three connectors. It offers the features as the Ultra-wide SCSI except that it may not be used to support RAIDport PCI devices. It is recommended to attach SCSI devices that are slower with respect to SCSI HDDs to this 8-bit SCSI interface. In general, the 8-bit SCSI or IDE interfaces are recommended for CD-ROM drives, and the 16-bit SCSI interface for hard disk drives. The external SCSI port is handled by the 8-bit SCSI controller. NOTE Although the 16-bit SCSI interface is known as the "Wide SCSI", its cable is actually narrower in physical terms than that of the 8-bit "Narrow" SCSI interface. Integrated Drive Electronics (IDE) The IDE controller is implemented as part of the PIIX4 chip (the PCI/ISA bridge). It is driven from the PCI bus, and has PCI-Master capability. It supports "Ultra-33" Synchronous DMA mode transfers up to 33 MB/s, and Standard IDE. To use the "Ultra-33" features the drives must be compliant with "Ultra-33". The IDE controller supports two devices (one master and one slave) connected to a single channel. The channel is fitted with an IDE cable with two connectors. 21

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
21
2
System Board
Devices on the PCI Bus
of five internal wide-SCSI hard drives are supported.
By default, the internal SCSI bus is configured to run in Ultra-SCSI mode
(providing a maximum band-width of 40 MB/s). The user may configure the
SCSI system using the
SCSISelect
utility, included in the system BIOS. This
utility is described in more detail in the
User’s Guide
.
SCSI-configured-automatically (SCAM) support is provided at level 2, for
Plug and Play. However, hot swap is not supported. The controller is BBS
compliant.
The Ultra-wide SCSI controller and cable supports RAID
port
PCI devices
such as the HP FastRAID solution (refer to
page 38
).
AIC-7860 Narrow (8-bit)
SCSI controller
The
Adaptec AIC-7860 Narrow SCSI PCI controller
is integrated on the
system board. The data transfer rate is 20 MB/s on an 8-bit single-ended bus.
It is fitted with a 8-bit SCSI cable with three connectors. It offers the features
as the Ultra-wide SCSI except that it may not be used to support RAID
port
PCI devices. It is recommended to attach SCSI devices that are slower with
respect to SCSI HDDs to this 8-bit SCSI interface. In general, the 8-bit SCSI
or IDE interfaces are recommended for CD-ROM drives, and the 16-bit SCSI
interface for hard disk drives. The external SCSI port is handled by the 8-bit
SCSI controller.
NOTE
Although the 16-bit SCSI interface is known as the “Wide SCSI”, its cable is
actually narrower in physical terms than that of the 8-bit “Narrow” SCSI
interface.
Integrated Drive Electronics (IDE)
The IDE controller is implemented as part of the PIIX4 chip (the PCI/ISA
bridge). It is driven from the PCI bus, and has PCI-Master capability. It
supports “Ultra-33” Synchronous DMA mode transfers up to 33 MB/s, and
Standard IDE. To use the “Ultra-33” features the drives must be compliant
with “Ultra-33”.
The IDE controller supports two devices (one master and one slave)
connected to a single channel. The channel is fitted with an IDE cable with
two connectors.