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MaxDB data volumes usage

former_member182374
Active Contributor
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Hi all,

I have the following configuration for my MaxDB (which is a part of a DMS system).

Version is MaxDB 7.6

Data volumes are:

1) 2.GB

2) 2.GB

3) 10GB

4) 10GB

5) 10GB

6) 3GB

7) 3GB

😎 3GB

It's seems that for volumes 3, 4 & 5 (10GB size) only 4.5GB are used.

My question is: why the free 5.5GB of the 10GB volumes is not used?

Is it a configuration issue or does MaxDB determine where to write automatically?

I don't see any performance problems.

Thanks,

Omri

Accepted Solutions (1)

Accepted Solutions (1)

lbreddemann
Active Contributor
0 Kudos

> I have the following configuration for my MaxDB (which is a part of a DMS system).

> Version is MaxDB 7.6

>

> Data volumes are:

> 1) 2.GB

> 2) 2.GB

> 3) 10GB

> 4) 10GB

> 5) 10GB

> 6) 3GB

> 7) 3GB

> 😎 3GB

>

> It's seems that for volumes 3, 4 & 5 (10GB size) only 4.5GB are used.

They will be used - just put more data into your content server (?).

> My question is: why the free 5.5GB of the 10GB volumes is not used?

> Is it a configuration issue or does MaxDB determine where to write automatically?

No, there is nothing wrong here.

MaxDB choses the datavolumes to save changed/new pages in a order based on their relative filling.

Nevertheless as long as there is freespace in a volume it is possible that this will get used as well.

Maybe you're thinking of a feature that existed until SAP 7.4 where the database would even out the filling degree in times of low activity. This feature is not present anymore - instead changed pages are relocated during savepoints.

> I don't see any performance problems.

Why should you? Content server usually does not put the same level of traffic to the database as a OLTP system would. For that you can use different sized data volumes without any performance drops.

regards,

Lars

former_member182374
Active Contributor
0 Kudos

Thanks Lars

Answers (0)