Technical data

4–55
Compaq HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
Disk Inline Exerciser (DILX)
Checking for Disk-Drive Problems
Use the disk inline exerciser (DILX) to check the data-transfer capability of disk
drives. DILX generates intense read/write loads to the disk drive while monitoring the
drive’s performance and status. You may run DILX on as many disk drives as you’d
like, but because this utility creates substantial I/O loads on the controller, Compaq
recommends that you stop host-based I/O during the test. You may also use DILX to
exercise the read capability of CD-ROM drives.
Finding a Disk Drive in the Subsystem
Use the following steps to find a disk drive or device in the subsystem:
1. Connect a PC or a terminal to the controller’s maintenance port.
2. Show the devices that are configured on the controller with the following
command:
SHOW DEVICES
3. Find the device in the enclosure with the following command:
LOCATE device-name
This command causes the device’s LED to blink continuously.
BlChd Number of blocks added to the cache during the last update interval.
BlHit Number of blocks hit during the last update interval.
RH% Read cache-hit percentage for data transferred between the host and the
unit..
Table 4–13 Unit Status Columns (Continued)
Column Contents