Estimating backup time
To view a Backup Time Estimation report
- In the Recovery Management perspective, click the Add View
menu arrow, and then select Time Estimation report. - Select Backup Estimation.
- In the General section, complete the following fields:
Field
Description
Report Name
Enter a name for the report.
BTO Target
Accept the default value or enter the maximum acceptable Backup Time Objective (hh:mm) for this report.
To define the default value, see Setting Recovery Management options.
DB2 Connection
Select a Db2 connection from your list of favorites. If necessary, you can add a connection. See Connecting to Db2 subsystems.
Object Set
Navigate to and select an object set.
- Click Backup.
- In the Backup section, accept the default values or enter new values:
Field
Description
Outsize
Specify the size threshold for making copies to an alternate DD or output descriptor.
Valid values are:
0 through 4294967295 KB
0 through 4194303 MB
0 through 4095 GB
Note
If you enter an Outsize value greater than 0, the hybrid elapsed time is the combined time of two estimates.
Index Size Threshold
Specify the threshold size at which indexes are backed up rather than rebuilt.
Valid values are:
0 through 4294967295 KB
0 through 4194303 MB
0 through 4095 GB
MAXTASKS
Define the default number of multitasking subtasks that can be performed in parallel when you are making copies. Valid values are 1 through 32.
Include Indexes
Select to include indexes in the backup estimation, if they are not already in the object set.
Select one of the IO factor options
Select an option:
- Use a Specific IO Factor: Enter a valid value or accept the displayed value. Valid values are 1 through 10000, and the default is 100. A factor of 0 will calculate a new factor estimate.
- Calculate IO Factor: Enter the name of a DASD unit, or let the system use SYSALLDA as the default DASD unit. BMC AMI Command Center calculates and uses an IO value based on this DASD unit.
Click Growth.
In the Growth section, accept the default values or enter new values:
Field
Description
Number of data sets increased by
Enter a percentage or number increase to generate a What-If backup estimation based on an increase in the number of data sets. Valid values are 0 through 32767.
Size of data sets increased by
Enter a percentage or number increase to generate a What-If backup estimation based on an increase in the size of the data sets. Valid values are 0 through 32767.
Click Generate Report
.The Time Estimation Report tab is displayed.
Time Estimation report#
Description
Details
1
Run button
Executes the report.
2
Tabs
Categorizes the information as follows:
Definition
Backup Estimation
3
Details about the actual objects
Indicates the actual number of objects in your selected group, their actual size, and the applicable I/O factor
4
Details about the projected objects
Projects what the number and size of objects would be, based on the What-If percentage or number changes that you entered in the Growth section (see Step 7)
5
Recovery Manager options
Displays the Recovery Manager options
6
Elapsed time
Estimates the elapsed time needed for each displayed backup strategy
Note
If you enter an Outsize value greater than 0, the hybrid elapsed time is the combined time of two estimates.
7
Backup strategy
Estimates values for multiple backup strategies
8
BTO indicator
Indicates whether the backup time estimation falls within your Backup Time Objective (BTO):
indicates that the time is within your defined BTO.
indicates that the time exceeds your BTO.Legend
- In the Recovery Management perspective, click Add View
and select Time Estimation report from the list.The Generate Time Estimation wizard opens.
- On the wizard's Step 1 - General page, complete the following fields and click Next:
Field
Description
Name
Enter a name for the report.
Estimate Backup Time
Select Estimate Backup Time.
BTO Target
Accept the default value or enter the maximum acceptable Backup Time Objective (hh:mm) for this report.
To define the default value, see Setting Recovery Management options.
DB2 Connection
Select a Db2 connection from your list of favorites. If necessary, you can add a connection. See Connecting to Db2 subsystems.
Object Set
Navigate to and select an object set.
- On the wizard's Step2 - Backup page, accept the default values or enter new values and click Next:
Field
Description
Outsize
Specify the size threshold for making copies to an alternate DD or output descriptor.
Valid values are:
0 through 4294967295 KB
0 through 4194303 MB
0 through 4095 GB
Note
If you enter an Outsize value greater than 0, the hybrid elapsed time is the combined time of two estimates.
Index Size Threshold
Specify the threshold size at which indexes are backed up rather than rebuilt.
Valid values are:
0 through 4294967295 KB
0 through 4194303 MB
0 through 4095 GB
MAXTASKS
Define the default number of multitasking subtasks that can be performed in parallel when you are making copies. Valid values are 1 through 32.
Include Indexes
Select to include indexes in the backup estimation, if they are not already in the object set.
Use a specific IO Factor
Enter a value. Valid values are 1 through 10000, and the default is 100. A factor of 0 will calculate a new factor estimate.
Select one of the IO factor options
Select an option:
- Use a Specific IO Factor: Enter a valid value or accept the displayed value. Valid values are 1 through 10000, and the default is 100. A factor of 0 will calculate a new factor estimate.
- Calculate IO Factor: Enter the name of a DASD unit, or let the system use SYSALLDA as the default DASD unit. BMC AMI Command Center calculates and uses an IO value based on this DASD unit.
On the wizard's Step 3 - Growth page, accept the default values or enter new values:
Field
Description
Number of data sets increased by
Enter a percentage or number increase to generate a What-If backup estimation based on an increase in the number of data sets. Valid values are 0 through 32767.
Size of data sets increased by
Enter a percentage or number increase to generate a What-If backup estimation based on an increase in the size of the data sets. Valid values are 0 through 32767.
Click Finish.
The General, Backup, and Growth tabs are populated and the Time Estimation Report tab is displayed.
Time Estimation report#
Description
Details
1
Run button
Executes the report.
2
Tabs
Categorizes the information as follows:
3
Details about the actual objects
Indicates the actual number of objects in your selected group, their actual size, and the applicable I/O factor
4
Details about the projected objects
Projects what the number and size of objects would be, based on the What-If percentage or number changes that you entered in the Growth tab (see Step 4)
5
Recovery Manager options
Displays the Recovery Manager options
6
Elapsed time
Estimates the elapsed time needed for each displayed backup strategy
Note
If you enter an Outsize value greater than 0, the hybrid elapsed time is the combined time of two estimates.
7
Backup strategy
Estimates values for multiple backup strategies
8
BTO indicator
Indicates whether the backup time estimation falls within your Backup Time Objective (BTO):
indicates that the time is within your defined BTO.
indicates that the time exceeds your BTO.Legend
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