Memorex LOCK - VERSION 2-24 Technical Information PDF herunterladen (Seite 43)

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101

Retaining Dataset

User Reference

Use Pursuant to Company Instructions

1-25

Example 1 The following is an example of retaining x versions for y days. In the

example, you need to retain each version of an inventory dataset for 100

days. You also need to retain the last 10 versions, regardless of when the

versions were created. The dataset definition specifies:

Generation Dataset......YES

Retention Days.......100

Retention Cycles.....10

Retention DLA........0

Case 1 During the first 100 days after creating the first version, you create a total

of nine versions. On day 101, no versions are scratched because you still

have not completed 10 cycles.

Case 2 If you create version 11 after 60 days, no version is eligible for scratch

because the first version you created is only 60 days old. This version is

retained until day 100 regardless of the number of versions created as of

that time.

Example 2 The following is an example retaining a work dataset for x number of

days after its last access. In the example, an accounting job produces

results from work datasets in multiple stages. If you decide to save the

work datasets for 15 days as of the last date you use the data, you would

catalog the dataset with:

Generation Dataset......NO

Retention Days.......0

Retention Cycles.....0

Retention DLA........15

Each version is saved for 15 days after its last access.

Example 3 The following is an example of what is required if you want a temporary

dataset.

Generation Dataset......NO

Retention Days.......0

Retention Cycles.....0

Retention DLA........0

All versions are eligible for scratch at all times.

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