Creating and Working with Disk Images

Once a Collection has been created, and items have been collected, you can create a Disk Image of the Collection. A Disk Image enables you to copy all or specific items in a Collection to disk. This can be used to share content in a Collection with individuals or groups outside the Content Server environment.

You can specify settings to control what items are collected, the size of the Disk Image, and the output format. You can also configure email notification to notify interested parties that the Disk Image has been created and provide details about the Disk Image, including how to locate the Disk Image output files.

After the Disk Image has been created, you can browse to the Disk Image location to access the files and to view the Disk Image Manifest file, which provides detailed information about the Disk Collection. For more information about viewing the Disk Image Manifest file, see Reading a Disk Image Manifest File.


	Note: The Make Disk Image option depends on the privileges assigned by your administrator and may not be available.

Each time a Disk Image is created, information is recorded in the Collection Items Audit tab for the Collection so that you can view all past events that have occurred with the Collection, including the items that have been included in the current and past Disk Image creations. For more information about the Collection Items Audit, see Reviewing the Collection Items Audit.


	Note: All operating system times are expressed in Coordinated Universal Time (UTC) times. When Content Server records a time in ZIP files, the UTC time is not adjusted to local server time.

You can also create a Disk Image for OpenText Enterprise Library items you collected. The metadata of OpenText Enterprise Library Items and the content for OpenText Enterprise Library Variants will be written to the disk.

Creating a Disk Image

You can create a Disk Image of specific collected items or of an entire Collection. Depending on settings configured by your administrator, when you create a Disk Image, you can control the amount and type of information included in the Disk Image by setting specific Disk Image settings on the Make Disk Image page.


	Note: Your administrator must have configured the Disk Image Creation Settings from the Collections Administration area of the administration page before you can create a disk image. If you are not able to create a disk image, contact your administrator.

The following settings and information appear on the Make Disk Image page:

Setting

Description

Summary

A list of the item types included in the Disk Image and a count of each item type.

Notes

Information to include with the Disk Image.

Destination Path

The path where the Disk Image will be created. This setting is configured by your administrator.

Zip Disk Image

Compress the Disk Image. This is enabled by default to simplify downloading.

Available Disk Sizes

Select the expected size of the disk output. If the Collection size exceeds the size you specify from this list, an additional Disk Image is created.

Disk File System Format

Select the ISO Format for the outputted information. For more information about file system formats, see Disk File System Formats.

Sort Order

How item types are sorted:

•	Create Date
•	DataID
•	Owner
•	Name
•	Parent DataID
•	Parent Name

Collection

The Content Server information about the Collection that you want included in the Disk Image.

This option will only appear if your administrator marked it as user configurable.

Content

The Content Server information about the items in the Collection that you want included in the Disk Image.

This option will only appear if your administrator marked it as user configurable.

Max Objects per Image

The number of distinct objects you want included in each image. If the Collection contains more items than the number entered here, an additional Disk Image is created.

This option will only appear if your administrator selected the appropriate check box.

Export a Sample

Provide information in the Sample Size section of the Disk Image Manifest File about a randomly selected subset of items in the Collection that are written to the Disk Image. This is useful for testing the responsiveness of a Collection.

Enter the number of desired objects to export as a sample.

Include Custody Details

Provide information in the Chain of Custody Notes section of the Disk Image Manifest File about the Content Server software environment, when the Collection was created, completeness details, etc. For details, see Reading a Disk Image Manifest File.

Include EDRM XML 1.2

Provide a description of the disk image in the manifest using the Electronic Discovery Reference Model standard.


	Note: The number of items described in the EDRM may be significantly less than the number of items in the Disk Image. Only versioned objects with content stored in Content Server are represented in an EDRM description. Content Server objects such as folders, Categories, and Classifications and many other object types are not files, and therefore are not included in the EDRM description.

Version Handling

How document versions in the Collection should be handled during the Disk Image creation. For more information, see Collecting Items from the Search Results Page.

Metadata Language

The metadata information retrieved for the disk image will be in the language you select.

Notification area:

When

The time in the Disk Image creation process that email notification should be sent.

Recipient

The email address of the User creating the Disk Image. If an email address has not been configured for you in Content Server, you can type in your email address. This is a required field.

Message Subject

The text that appears in the Subject field of the email notification message. This is a required field.

3rd Party Notifications

The additional Content Server Users, Groups, and external email addresses that email notification should be sent to, if any.


	Note: Depending on the settings specified by your administrator, some of the settings above may not appear, or be configurable, on the Make Disk Image page.

Disk File System Formats

The Disk File System Format determines the folder structure of the outputted Collection information. Each of the Disk Image formats have limitations on the amount of information that can be written to them, and each format has a different limitation. Regardless of the Disk File System Format that you select, Content Server creates additional output directories with additional Disk Images when:

The output content size exceeds the disk size selected in the Available Disk Sizes list on the Make Disk Image page.
The Max Objects per Image setting on the Make Disk Image page is set and is exceeded.

Before you select an option in the Disk File System Format setting on the Make Disk Image page, you should view the Collection and determine which of the output formats you require.

The available Disk File System Formats are: ISO 9660: 1999, ISO 9660 Level 2 and Joliet. The following sections describe the available Disk File System Formats and the limitations of each:

ISO 9660: 1999

File Name Limitations:

102 characters, including the extension or suffix.

The name template is A_B_C, where A is the Content Server DataID, B is version, and C is the object name. Longer names are truncated at the first 102 characters of the A_B_C combination string. Leading and trailing spaces are removed prior to normalization.
Directory Name Limitations:

103 characters

The name template is X_Y, where X is the Content Server DataID, and Y is the directory name. Longer names are truncated at the first 60 characters of the X_Y combination string.
Normalization to Alphanumeric Characters:

Yes – directory and file names.

Normalized to [A-Z 0-9._] characters. Each character out of that range is replaced with an underscore character ‘_’.
Maximum Path String Length:

Less than 255 characters
Maximum Directory Depth:

22 levels

ISO 9660 Level 2

File Name Limitations:

31 characters, including the extension or suffix.

The name template is A_B_C, where A is the Content Server DataID, B is the version number, and C is the object name. Longer names are truncated at the first 31 characters of the A_B_C combination string. Leading and trailing spaces are removed prior to normalization. Extension characters outside the range [A-Z 0-9_] are removed.
Directory Name Limitations:

8 characters

Longer names are converted into the format ST, where S is the first 4 bytes of the directory name, and T is the last 4 digits of the LES DataID. Leading and trailing spaces are removed prior to normalization. Characters out of that range are replaced with an underscore character ‘_’.
Normalization to Alphanumeric Characters:

Yes – directory and file names

Normalized to [A-Z 0-9_] characters. Each character out of that range is replaced with an underscore character ‘_’.
Maximum Path String Length:

Less than 255 characters
Maximum Directory Depth:

8 levels

Joliet

File Name Limitations:

64 characters, including the extension or suffix.

The name template is S_T_U, where S is the Content Server DataID, T is the version number, and U is the object name. Longer names are truncated at the first 64 characters of the A_B_C combination string.
Directory Name Limitations:

64 characters

The name template is X_Y, where X is the Content Server DataID, and Y is the directory name. Longer names are truncated at the first 64 characters of the A_B_C combination string.
Normalization to Alphanumeric Characters:

Yes – directory and file names

If a directory contains the following characters, they are replaced with tilde (~) characters: [@@*:<>?\|.]

If a file name contains the following characters, they are replaced with underscore character ‘_’ characters: [@@*/:<>?\|]

Any characters higher than ASCII 127 are replaced with an underscore character ‘_’.
Maximum Path String Length:

Less than 255 characters
Maximum Directory Depth:

22 levels


	Note: When calculating the path string length and the maximum directory depth, the Destination Path is included. For each format, if these limitations are exceed, the directory path is truncated and upper level directory levels are replaced with a directory named NORMALIZED.

Understanding Disk Image Creation Notification

When you create a Disk Image, you can select one of two options for the type of email notification that you want to be sent:

An Image Report that is sent with the completion of every Disk Image, including when additional Disk Images are created because a value is exceeded.
A Completion Report that is sent at the completion of the final Disk Image.

During the Disk Image creation, you can also specify which Content Server Users, Groups, or third party individuals receive this notification. For example, if you are creating a Disk Image for a team project, you can notify members of the team that the Disk Image was created.

In addition to receiving notification of the Disk Image creation, the first sentence of the email message body contains a URL to the Disk Image for easy access. The following information is also included in the notification email message:

Initiated by	The login ID of the User who performed the Disk Image creation.
Collection Name	The name of the Collection the Disk Image creation was initiated from.
Started at	The day, month, year and time that the Disk Image creation was initiated.
Completed at	The day, month, year and time that the Disk Image creation completed.
Image Size	A count of items collected. This is included in every Image Report message. It appears in the Completion Report email messages only when a single Disk Image is created.
Image Number	The index number of the Disk Image. This is only included in Image Report email messages.
Total Images	The total number of Disk Images created for this Make Disk operation. This is only included in Completion Report email messages.
Total Objects Exported	The total number of objects output in all Disk Images for this Make Disk operation. Objects are defined as items with distinct Data IDs. This is only included in Completion Report email messages.
The Collection may be accessed here	A URL which links to the Collection in Content Server.

To Create a Disk Image

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