Creating an EMC BCV backup profile

When using BCV devices for backups, IMS Recovery Expert establishes a BCV device to each IMS source volume during profile setup.

About this task

When a backup is requested, the BCV mirror is split from the IMS source volume. If multiple generations are being maintained, the next generation BCV mirror is then established. The split BCV device can be used as a point-in-time backup for restore operations. IMS Recovery Expert can maintain up to seven generations of backups using the BCV methodology.

When using the BCV backup methods, IMS Recovery Expert will automatically vary all target units offline when the backup is taken. These target units will be exact copies of the source units they are paired with. It is not necessary or recommended to vary the target volumes back online in preparation for the next backup.

Procedure

On the System Backup Profile Display panel (BSY$BPRD), specify C on the Cmd line and press Enter.

Figure 1. Enter New Backup Profile Options panel (BSY$BPRC )

       Enter New Backup Profile Options            
  BSY$BPRC                                                    
    Creator         PDMONA                                   
                                                             
    Profile Name                                             
                                                             
    Description                                              
                                                             
    IMS SSID        IAA   (? for system list)                
                                                             
    Backup Method   B  (Bcv/Snap/Flash/dfsmsdss(L))          
                                                             
    Source/         M  (Auto discover/pool mapping,          
    Target Mapping      Stogroup discover/pool mapping       
                        Manual)
                                                             
    Update Option   U  (Update, View only, No access)

On the Enter New Backup Profile Options panel, specify information in the following fields:
Creator

This field is automatically completed with your user ID as the profile creator.

Profile name

Specify a name for the profile (up to 30 characters).

Description

(Optional) Specify a profile description.

IMS SSID

Specify the IMS subsystem ID or Group Name for the profile in this field. To view and select from a list of systems and groups, specify ? in this field and press Enter. The SSID Selection is displayed. This panel lists the available systems and groups and indicates whether they are active or inactive. Select a system or group by specifying S next to its name, and then press Enter.

Backup Method

Specify B for BCV backup.

Source/Target Mapping
Specify how source volumes are determined and mapped to the target volumes. You can specify one of the following values in this field:
- Specify A to select Auto discover/pool mapping. If you specify this option, the source volumes are automatically discovered at run time and mapped to target volumes using a pool of target volumes (either units or SMS storage groups).
- Specify S to select Stogroup discover/pool mapping. If you specify this option, the source volumes are discovered using SMS storage groups that are specified for an IMS system. These source volumes are mapped to target volumes using a pool of target volumes (either units or SMS storage groups).
- Specify M to select Manual mapping. If you select this option, you can manually specify the source volumes and map them to target volumes.
Update Option
This option controls how other users can use your profile.
- Specify U to allow others to update the profile.
- Specify V to allow others to view but not update the profile.
- Specify N to prevent others from viewing or updating the profile.

Press Enter.

Figure 2. Update Backup Profile panel (BSY$BPRU)


 BSY$BPRU  V2R2 ---------- Update Backup Profile --------- 2021/07/03  10:54:41 
 Option  ===>                                                 Scroll ===> PAGE  
                                                                                
      Commands: ? - Show all commands                                           
 Line Commands: I - Insert  D - Delete  X - Exclude  U - Undo from exclude      
                                                                                
 -------------------------------------------------------------------------------
  Creator: PDMONA     Name: TEST12                           SSID:        IBA2  
  Share Option: U  (Upd,View,No)    Description: TEST12                         
 -------------------------------- Backup Options -------------------------------
 Backup Method     ==> B  (B/S/F/L)            Current Generation==> 00         
 Backup Scope      ==> D  (Full/Data)          Setup Needed      ==> Y          
 Backup Generations==> 03 (01 - 08)            Issue Log Suspend ==> N  (Yes/No)
 Offload Options   ==> N  (Yes/No/Update)      Validate IMS Vols ==> N  (Yes/No)
                                               Enable DB Restore ==> N  (Yes/No)
                                               Issue NOTIFY.IC   ==> N  (Yes/No)
 ------------------ Volume Mappings -----------------          Row 1 of 1       
      Source   Dev     Src   Target                                             
 Cmd  Volumes  Type    Unit  Units     Message Area                             
  I   PRESS ENTER FOR NEW LINE                                                  
 ***************************** Bottom of Data **********************************

On the Update Backup Profile panel, the following fields will be read-only upon profile creation:

Backup Method: The backup method used for this profile. This field contains B for BCV backup.
Current generation: When you first create a profile, this field will be set to 00 and will be read only. After the profile has been built and submitted, this field will contain the generation that is currently mirroring IMS.
Setup Needed: When you create a profile, this field will be set to Y and will be read only. The profile setup process must be run the first time a profile is built and the resulting job submitted. After profile setup has been performed, this field will contain N when you update the profile. If you update a profile and change the volume configuration, number of generations, or backup type, rerunning profile setup will be required and this field will be reset to Y.

Specify information in the following fields:

Backup Scope

Indicate if you want a full backup taken (data and logs) or to backup data only. Note that if you specify data only and IMS Recovery Expert detects IMS system log data on the volumes during the backup, the backup will proceed without error only if all IMS log and data volumes have been included in the profile. In this case, the backup will be flagged as a mixed data backup and you will only be able to restore both the data and the logs.

Backup Generations

Specify the number of generations of backups you want to keep. Valid values are 1 to 8. The number of backup generations that will be available for restoration will be one less than the value you specify here, because one generation is always established to and mirroring the IMS source volumes.
Note:
If you specify 1 generation, when the backup job is run, the BCVs are split. IMS Recovery Expert does not establish another generation because only one generation can exist. Instead, the backup profile is marked as Setup Needed. To use this profile to create another backup, you must run profile setup. This will reestablish the one and only generation, and start the mirroring process so the BCVs can be split to create the next backup.

Note that running profile setup again will destroy the backup represented by this one generation of BCVs, because the BCVs will begin mirroring the current set of IMS source volumes after they are reestablished.

Offload Options

Specify Y in this field if you want to retain more backups than the number specified in the Backup Generations field. If you specify this option, older backups will be offloaded to another device (such as tape or other volumes). When you initially select this option, the Offload Options panel will be displayed. If you edit the profile at a later time and want to update the offload options, specify U in this field.

Issue Log Suspend

Specify whether you want IMS Recovery Expert to stop all logging activity on the IMS system(s) while the backup is made. Specify Y to suspend logging activity; logging will resume after the backup has completed. If the Symmetrix arrays are equipped with ECA (Enginuity Consistency Assist), you can specify N in this field to allow ECA to manage the log suspension. Note that if any of the Symmetrix devices do not support ECA, the log is automatically suspended.

Validate IMS Vols

If you specify Y in this field, every time the backup job is run, IMS Recovery Expert will determine what volumes the system(s) is using and ensure that the volumes are included in the backup. The profile setup process will always validate volumes, among other profile setup procedures.

Enable DB Restore

If you want to enable IMS Recovery Expert application level recovery from backups created by this profile, specify Y in this field. During backup, information is saved about database data sets that allows databases to be individually restored later.

Issue NOTIFY.IC

If you want to have a NOTIFY.IC done for each object when a backup is created, specify Y in this field. The NOTIFY.IC will be done for each recoverable object in the backup and allows DBRC to be notified that a backup of the object was created.
Note: Issue NOTIFY.IC is set to Y when a System Level Backup is created. IMS Recovery Expert will issue a NOTIFY.IC for each object in the System Level Backup with an invalid image copy data set name. If an image copy data set is needed, then the image copy data sets can be created by generating the build image copy JCL from System Level Backup. Refer to Creating image copies from System Level Backups for more information on generating the build image copy JCL.
Specify source and target volumes.