Physical Disk Attributes

Use Physical Disk attributes to create situations that monitor information about fixed and hard disk drives. Physical disk is a multiple-instance attribute group. You cannot mix these attributes with those of any other multiple-instance group.


% Disk Idle Time The percentage of elapsed time that the selected disk drive is not servicing any read or write requests. Valid values are positive integers in the range 0 to 100 (expressing a percentage).

% Disk Read Time The percentage of elapsed time a disk drive been busy servicing read requests. Valid values are positive integers in the range 0 to 100 (expressing a percentage) and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 85%, enter 85.

% Disk Time The percentage of elapsed time a disk drive has been busy servicing read or write requests. Valid values are positive integers in the range 0 to 100 (expressing a percentage) and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 12%, enter 12.

% Disk Write Time The percentage of elapsed time that a disk drive has been busy servicing write requests. Valid values are positive integers in the range 0 to 100 (expressing a percentage) and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 7.5%, enter 7.5.

Avg Disk Bytes/Read The average number of bytes transferred from a disk per read operation. Valid values are positive integers in the range 0 to 2147483647 (expressing bytes per read) and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 2,000 bytes read, enter 2000.

Disk Bytes/Sec The rate at which bytes are transferred to or from a disk during write or read operations. Valid values are positive integers in the range 0 to 2147483647 (expressing bytes/second) and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 2,000,000 bytes per second, enter 2000000.

Disk Name The name of a physical disk. Valid format is a text string of up to 64 characters.

Disk Queue Length The number of requests outstanding on a disk the instant the data is collected, including requests currently in service. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *AVG, *MIN, *MAX, or *SUM functions. For example, to express 512 for the number of requests outstanding on a disk, enter 512.

Disk Read Bytes/Sec The average number of bytes read from a disk per second. Valid values are positive integers in the range 0 to 2147483647 (expressing bytes/second) and can include the use of the *MIN, *MAX, or *SUM functions. For example, to express 2,000,000 bytes per second, enter 2000000.

Disk Reads/Sec The average number of read operations that have occurred on a disk per second. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *MIN, *MAX, or *SUM functions. For example, to express 430 for the number of read operations occurring on a disk, enter 430.

Disk Transfers/Sec The average number of read and write operations that have occurred on a disk per second. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *MIN, *MAX, or *SUM functions. For example, to express 230 for the number of read and write operations per second occurring on a disk, enter 230.

Disk Write Bytes/Sec The average number of bytes written to a disk per second. Valid values are positive integers in the range 0 to 2147483647 (expressing bytes/second) and can include the use of the *MIN, *MAX, or *SUM functions. For example, to express 2,000,000 bytes written per second, enter 2000000.

Disk Writes/Sec The average number of write operations that have occurred on a disk per second. Valid values are positive integers in the range 0 to 2147483647 and can include the use of the *MIN, *MAX, or *SUM functions. For example, to express 327 for the average number of write operations occurring on a disk, enter 327.

Server Name The name of the managed system. Valid format is a text string of up to 64 characters.

Timestamp The date and time the Tivoli Enterprise Monitoring Server samples the data. Standard 16-character date/time format (CYYMMDDHHMMSSmmm), where:

C

Century (0 for 20th, 1 for 21st)

YY

Year

MM

Month

DD

Day

HH

Hour

MM

Minute

SS

Second

mmm

Millisecond

Use simple text strings as described above. For example, enter 0971009130500000 to express October 9, 1997, 1:05:00 pm.