Block (Multi-Sector Transfer); Pio Mode; Dma Mode; S.m.a.r.t - Silicon Graphics Rackable H2106-G7 System User's Manual

Block (Multi-Sector Transfer)

PIO Mode

DMA Mode

S.M.A.R.T.

32-Bit Data Transfer

007-5683-004
Block mode boosts IDE drive performance by increasing the amount of data transferred. Only 512
bytes of data can be transferred per interrupt if block mode is not used. Block mode allows
transfers of up to 64 KB per interrupt. Select "Disabled" to allow the data to be transferred from
and to the device one sector at a time. Select "Auto" to allows the data transfer from and to the
device occur multiple sectors at a time if the device supports it. The options are Auto and
Disabled.
PIO (Programmable I/O) mode programs timing cycles between the IDE drive and the
programmable IDE controller. As the PIO mode increases, the cycle time decreases. The options
are Auto, 0, 1, 2, 3, and 4. Select Auto to allow BIOS to auto detect the PIO mode. Use this value
if the IDE disk drive support cannot be determined. Select 0 to allow BIOS to use PIO mode 0,
which has a data transfer rate of 3.3 MBs. Select 1 to allow BIOS to use PIO mode 1, which has
a data transfer rate of 5.2 MBs. Select 2 to allow BIOS to use PIO mode 2, which has a data
transfer rate of 8.3 MBs. Select 3 to allow BIOS to use PIO mode 3, which has a data transfer rate
of 11.1 MBs. Select 4 to allow BIOS to use PIO mode 4, which has a data transfer rate of 16.6
MBs. This setting generally works with all hard disk drives manufactured after 1999. For other
disk drives, such as IDE CD-ROM drives, check the specifications of the drive.
Selects the DMA Mode. Options are Auto, SWDMA0, SWDMA1, SWDMA2, MWDMA0.
MDWDMA1, MWDMA2, UDMA0. UDMA1, UDMA2, UDMA3, UDMA4 and UDMA5.
(SWDMA=Single Word DMA, MWDMA=Multi Word DMA, UDMA=UltraDMA.)
Self-Monitoring Analysis and Reporting Technology (SMART) can help predict impending drive
failures. Select "Auto" to allow BIOS to auto detect hard disk drive support. Select "Disabled" to
prevent AMI BIOS from using the S.M.A.R.T. Select "Enabled" to allow AMI BIOS to use the
S.M.A.R.T. to support hard drive disk. The options are Disabled, Enabled, and Auto.
Select "Enabled" to activate the function of 32-Bit data transfer. Select "Disabled" to deactivate
the function. The options are Enabled and Disabled.
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