Feature Descriptions

￿￿￿￿$#0&'&In banded￿4'%14&+0)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.

￿￿￿￿52'%+#Maxtor.￿(70%6+105has 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.

￿￿￿￿219'4The Maxtor￿/#0#)'/'06Atlas 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.

￿￿￿￿&+#)0156+%5The 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.

6-6 Maxtor Atlas 10K III

Page 248
Image 248
Maxtor 10K III manual Feature Descriptions