4.2 DIU Upgrade Phases
The following table shows the DIU upgrade process by procedure and estimated time. Actual times may vary with typing speed and system configuration. Perform the DIU upgrade on ELAP B first, then on ELAP A. Complete the phases in the order shown.
Table 4-4 DIU upgrade Phases
| Phase | Elapsed Time (Minutes) | Activity | Procedure | |
|---|---|---|---|---|
| This Step | Cum. | |||
|
Connectivity setup |
15 |
15 |
Set up connectivity to the MPS servers. |
|
|
Verify DIU upgrade |
9 |
10 |
Verify this should be an DIU upgrade. |
|
|
Requirements check |
2 |
5 |
Verify requirements for DIU upgrade are met. |
|
|
Assess readiness for DIU upgrade |
15 |
20 |
Assess the server’s readiness for DIU upgrade. |
|
|
Pre-DIU upgrade health check |
7 |
15 |
Run the syscheck utility to verify the MPS server is operationally sound. |
|
|
Pre-DIU upgrade system time check |
5 |
60 |
Pre-DIU upgrade system time check. |
|
|
Pre-DIU upgrade Backups |
22 |
75 |
Backup application databases and other pertinent information. |
|
|
Perform DIU upgrade |
22 |
120 |
Run the DIU upgrade procedure on MPS B and A. |
|
|
Post-DIU upgrade health check |
7 |
15 |
Run the syscheck utility to verify the MPS server is operationally sound. |
|
|
Accept the upgrade after successful soak period. Note: User will not be able to perform backout procedure in case of any problem once the upgrade is accepted. |
4 |
This is done in a separate MTC |
Accept the upgrade on both MPS-A and MPS-B after sufficient soak period of around 1-7 days (depending upon customer provisioning volume) to see that everything works fine after the upgrade. |
|
|
Post-DIU upgrade health check |
7 |
15 |
Run the syscheck utility to verify the MPS server is operationally sound. |
|