Maxtor ATLAS 10K III - Manual (Page 248)

Feature Descriptions
6-6 Maxtor Atlas 10K III
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In banded recording, the disk is divided into multiple bands (also called partitions,
notches, or bit-zoned areas). Starting at the inner band, each band further out has
more blocks per track (a higher recording frequency). This use of multiple-frequency
recording increases the capacity of the drive.
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Maxtor has incorporated a number of unique options into the drive. The Maxtor
(Vendor) Special Function Control page is used to control these options. The options
include:
• Initiate Synchronous Data Transfer Negotiation - a toggle-type
parameter that allows the initiator to move between asynchronous and
synchronous modes of data transfer.
• Write Protect - Prevents writing to the disk drive.
• Spin Delay - specifies if the drive should spin-up at power on or wait for
a START STOP UNIT command from the host.
• Stagger Spin Delay - allows a series of drives to be spun up individually,
reducing the load on the system power supply.
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The Maxtor Atlas 10K III hard disk drives have three basic power states:
• OFF - power is removed from the drive.
• UNIT READY - the drive is powered on and is ready to accept and
execute commands. A single sub-state of UNIT READY exists,
ACTIVE. This is the highest power consumption state of the drive. A
media access command is acted upon immediately by the drive.
The drive remains in the UNIT READY state.
• NOT READY - The drive is powered on but cannot be addressed. An
example of this state is during spin-up. In other cases the drive may
require operator intervention. This state will return a Status = Check
condition.
The Power Condition Page, controlled with the MODE SELECT command, sets the
drive Power Management functions. This page is not changeable.
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The drive has extensive diagnostic capabilities, including those described below:
power-on self-test, periodic self-adjustments, and host diagnostics. Maxtor uses self-
diagnostic tests and sense data tracking to manage drive errors, in addition to logical
block address (LBA) revectoring.