The CCSS performance and status monitoring solution, QSystem Monitor, includes features that can be leveraged to monitor independent auxiliary storage pools (known as IASPs).
QSystem Monitor offers you:
- A summary view of ASP information, so you can display current IASP status and performance metrics.
- The monitoring of ASP information, which allows you to track IASP status and performance both in real-time and through its historical development.
- Messages that are sent automatically when an IASP has an issue such as an overflow or a hardware error.
The following sections describe these capabilities in more detail.
Overall Performance of an IASP
The ASP view in the Online Monitor is a good starting point (see image below). It allows you to check the following information about your IASPs:
- Total amount of disk space used
- Total percentage of disk space used
- Threshold percentage
- Total capacity
- Amount of IASP protected
- Percentage of IASP protected
- Capacity of IASP protected
- Amount of IASP unprotected
- Percentage of IASP unprotected
- Capacity of IASP unprotected
- Overflow recovery options
- Last recovery status
- Compressed recovery policy
- Post SRC and wait before overflowing
- Overflow immediately
- Wait indefinitely
- System overheads
- Disk space allocated to the system
- Disk space for error log storage
- Disk space for machine log storage
- Disk space for microcode storage
- Disk space for machine trace storage
- Disk space for MS Dump Storage
- Independent ASP information
- Device name
- Resource name
- Object version
- ASP status
- ASP balancing status
- Trace status
- Balance status
- Balance type
- Physical disks
- Unit number and status
- Unit type and model
- Serial number
- Protection type and compression status
- Part number
- Resource number and card location data
The ASP view also includes the following WRKDSKSTS-style information for the physical disks that comprise the IASP:
- Physical size
- Used percentage
- Number of Read and Write requests
- Volume of Read and Write data
Usage of an IASP
The following monitor types are available for independent ASPs:
- ASP Disk Busy percentage
- ASP Number of the Busiest Unit
- ASP Disk Space Free (size)
- ASP Disk Space Used (size)
- ASP Disk Usage percentage
- ASP Availability Status
Following is an example of a Standard Group view of available ASP volumetric definitions:
Following is an example of a Standard Group view of the ASP status definition:
There is also the Disk I/O monitor type that provides a job-level breakdown of disk activity, if required. The Disk I/O definition shows the available parameters that are used to provide a list of monitored jobs.
Details on the disk I/O can be displayed:
New to QSystem Monitor V13R8
The Disk Data Collection (overnight and real-time), Summarization, Audit Reporting and display programs have been changed to include the ASP name and treat it as part of the library name; it will in effect become a qualified name for the library.
Disk Collection: Application definition has been changed to allow for IASP names.
MONDSKINQ has been changed to allow inquiry by IASP and the display of IASP information.
The Disk Audit report has been changed to report by IASP.
Disk Summary: Displayed library names are qualified when IASPs exist for the system. The user will be able to display data for a selected IASP or data at the *ALL level.
Report Generator: The report Generator will need to store the IASP list for disk summary entries.
Online Monitor: A new IASP parameter has been added to the definitions.
Figures 1-4 show IASP-related object and library data in the Online Monitor module:
Figure 1: Largest Object, Monitor with IASP Objects
Figure 2: Largest Object, Show Details Close-Up
Figure 3: Largest Library, Monitor with IASP Libraries
Figure 4: Largest Library, Show Details Close-Up
The disk collection routines collect IASP data for review. Figures 5-7 show that type of data in the Disk Usage Inquiry (MONDSKINQ):
Figure 5: MONDSKINQ with New ASP Parameters
Figure 6: MONDSKINQ, Summary View of IASP Objects on the 1st Partition
Figure 7: MONDSKINQ, Detail View of an Object in IASP 34 on the 1st Partition
The disk collection routines capture IASP data for review. Figures 8-11 show that type of data in the Disk Summary module:
Figure 8: Disk Summary, New ASP Filter, IASP 33 Selected
Figure 9: Disk Summary, IASP 33 Only Data
Figure 10: Disk Summary, All ASPs Selected
Figure 11: Disk Summary, All ASP Data
Messages Generated by QSystem Monitor
The following table contains a list of ASP-related messages which QSystem Monitor generates under the conditions described in the message text. These apply to independent ASPs as well as system ASPs.
||Warning: Disk failure for ASP &2, on system &1.
||Warning: Disk ASP &2 synchronizing, on system &1.
||Warning: ASP &2 overflowed on system &1.
||Warning: ASP &2 has failed unit on system &1.
||Warning: ASP &2 has a hardware failure for a unit on system &1.
||Warning: ASP &2 has a unit not ready on system &1.
||Warning: ASP &2 has a write protected unit on system &1.
||Warning: ASP &2 has a degraded unit, on system &1.
||Warning: ASP &2 in parity rebuild state, on system &1.
||Warning: Unallocated disk units on system &1.
||ASP &1 on system &2 has overflowed.
||Warning: Disk &4 in ASP &3 on &2 has a problem: &1.