Defining the storage parameters for an EMC Centera store

Use the instructions in this section to add or modify storage parameters for the EMC Centera store.

To define the storage parameters for an EMC Centera store:

On the Info tab of the EMC Centera Store Properties, scroll to the Storage Parameters field and click Edit.
The Storage Parameters page displays.
In the Enter new value field, type the connection string for the EMC Centera storage system.
The connection string has the following format
```
IP_address|hostname{,IP_address|hostname}?Centera_profile
```
where:
- IP_address is the IP address of the Centera host.
- hostname is the host name of the Centera machine.
- Centera_profile is a full-path specification of a Centera profile and must begin with “path=”.
  The path must be accessible from the Content Server host machine and the specified directory must be readable by the Content Server installation owner.
The following example describes a connection string with multiple Centera profiles:
```
10.241.35.27,10.241.35.28?name=profA,secret=foo,10.241.35.27,10.241.35.28?name=profB,secret=bar,10.241.35.110,10.241.35.111?path=C:\Temp\auth.xml
```
In the following example, the SDK parses the passed-in connection string with the resulting elements going in the outConnectionStrings array, as follows:
```
outConnectionStrings [0] = 10.241.35.27?name=profA,secret=foo outConnectionStrings [1] = 10.241.35.28?name=profA,secret=foo outConnectionStrings [2] = 10.241.35.27?name=profB,secret=bar outConnectionStrings [3] = 10.241.35.28?name=profB,secret=bar outConnectionStrings [4] = 10.241.35.110?path=C:\Temp\auth.xml outConnectionStrings [5] = 10.241.35.111?path=C:\Temp\auth.xml
```
The following rules apply to the syntax of a connection string with multiple profiles:
- The IP address position must precede the listing of credentials and/or path for that profile.
- If the connection string includes a path that does not use the path= prefix but points to a PEA file and a set of credentials, the path must precede the credentials. Conversely, when using the path= prefix, there is no restriction as to where the path appears in the connection string in relation to the set of credentials.
- The credentials that appear in a connection string override those that are held in a PEA file.
- It is best practice to use the optional path= prefix hint to specify the path to a PEA file, to avoid confusion when evaluating the connection string. Do not mix credential data in a connection string.
If configuring Centera clusters, the connection string format identifies primary and secondary Centera clusters for one or more Content Servers:
```
server_config_name="primary=cluster_id,secondary=cluster_id[?Centera_profile]"{,server_config_name="primary=cluster_id,secondary=cluster_id[?Centera_profile]"}
```
where:
- The primary cluster_id is the name or IP address of the Centera cluster to which the Content Server writes.
- The secondary cluster_id is the name or IP address of the Centera cluster from which the Content Server reads if it cannot read from the specified primary cluster.
Including a Centera profile is optional. The storage parameter property has a length of 1024 characters. Assign names to the Centera cluster nodes that are short enough to allow the full connection string to fit within the property.
Click Add to move the value to the Storage Parameters section.
Enter more storage parameters, as necessary.
For example :
- To enable embedded blob use, enter the following parameter:
```
pool_option:embedded_blob:size_in_KB
```
  where size_in_KB is the maximum size in kilobytes of the content that you want to store as embedded blobs. For example, if you want to store all content that is 60 KB or smaller as embedded blobs, set the storage parameter value as:
```
pool_option:embedded_blob:60
```
  If embedded blob use has been enabled and content is written to a compressed Centera store, Content Server writes the content as linked blob if the original content size is greater than the embedded blob threshold. This restriction still applies if the eventual compressed content size is less than or equal to the embedded blob threshold. If the original content size is less than the embedded blob threshold, the content is stored as embedded blob.
- To set the C-clip buffer size, enter the following parameter:
```
pool_option:clip_buffer_size:integer
```
  where integer is an integer number representing the number of kilobytes. For example, to set the buffer size to 200 KB, set the storage value parameter as:
```
pool_option:clip_buffer_size:200
```
- To change the maximum number of socket connections that the Centera SDK can establish with the Centera host, enter the following parameter:
```
pool_option:max_connections:integer
```
  where integer is an integer number from 1 to 999 specifying the maximum socket connections. By default, the maximum number of socket connections is 99 on Windows platforms, and 1 on UNIX and Linux platforms.
Use the up and down arrows to sort the storage parameters.
Caution
If you have entered multiple parameters, the EMC Centera connection string must be in the first position.
When finished, click OK.

Defining the storage parameters for an EMC Centera store

Caution