B: Library Statistics; Counters; 8-Bit Counters; Drive Statistics - StorageTek L180 Operator's Manual

Library Statistics
Library statistics are divided into two major categories: counters and composite
information. Both categories are explained in the following sections.

Counters

Counters are composed of 8-bit, 16-bit, and 32-bit elements. Each type is
explained below.

8-bit Counters

8-bit counters have values from 0 to 2

Drive Statistics

Drive statistics are composed of the following information, based upon the
absolute element location of the drive:
1. PUT Retries—The number of times a PUT operation was retried for the
specified location. Generally, two retries will be logged for one failed
motion.
2. GET Retries—The number of times a GET operation was retried for the
specified location. Generally, two retries will be logged for one failed
motion.
3. Mount Count—The number of mount operations to a specified location

Cell Statistics

Cell statistics are composed of the following information, based upon the
absolute element location of the cell:
1. PUT Retries—The number of times a PUT operation was retried for the
specified location. Generally, two retries will be logged for one failed
motion.
2. GET Retries—The number of times a GET operation was retried for the
specified location. Generally, two retries will be logged for one failed
motion.
95895
8
minus 1 (or 255).
Ninth Edition
B
B-1