Media 4.4

From SEPsesam
Jump to: navigation, search
Other languages:
Deutsch • ‎English
Media pools
User Manual

Icon archived docs.png Note
This is not the latest version of the article and, as such, does not provide information on features and enhancements introduced in the latest release. For the latest documentation, check User Manual.


The term medium describes a data carrier on which backed up data is stored and preserved in case of an emergency. It contains tapes in tape devices, hard disks as changeable at USB connection or virtual media as directories, which are located on permanently connected hard disks. SEP sesam uses only media that are registered in media archives. The first window shows the media-archive containing all media prepared for use with SEP sesam.

Media overview en.jpg

The media table columns can be arranged in a particular order by dragging & dropping with the left-mouse button on the column header. You can select which columns should be displayed. These settings will be stored in the users local Java profile. If you right-click on a column header the following options are shown:

Media columns.jpg

SEP sesam label of the medium. Always "pool name + 5-digit number".
Barcode-number of the media, if available.
Write Protection
Switchable between On/Off; as long as On is selected, SEP sesam does not use this media for backups.
First Init
Date of the first initialization of the medium.
Last Init
Date of the last initialization of the medium.
Sesam Day
The date when the medium was last used for backup.
Media EOL
The media is not available up to this time (EOL = End-Of-Lifetime = Backup day + Lockdays of the media pool).
If the EOL (delay time) has elapsed of the medium (lock symbol = gray), then the medium will be "overwritten". If the EOL of the medium has not yet expired, but the medium is currently in use on this drive for that media pool yet (lock symbol = blue), then further backups are appended. If the lock icon = red, then this medium is locked until the displayed date.
Occupancy in proportion to the total storage capacity of the media (sometimes more than 100).
Represents the numeric value of the loader, which handles the media pool. The field is empty if no loader is used.
Slot within the loader where the medium was located before it was loaded into a drive. With this information, it is possible to put the medium back to the source slot by a simple unload command, without explicitly specifying the target.
Cartridge Type  
Cartridge type of the medium.
Displayed the last SEP sesam system message.
To which the medium belongs to.
Storage Pool
On which Storage Pool is the medium configured.
Readability Test  
Date of the last readability check.
Read Check Message  
Result of the last readability check.
User Comment
Further information.
The Encrypted field states whether the medium is encrypted or not (Yes/No).
EOL changed by
Close Tape
Encryption Capable
Contains Encrypted Blocks
Unique Cartridge Identity
Cartridge ID of the medium.
Universal Unique IDentifier is a 128-bit unique identification value.
Dupl Flag
In Drive
If a medium is loaded into the drive, the SEP sesam label will be displayed.

Properties 1

Information sign.png Note
As of v. ≥ 4.4.3 Grolar the media properties view is slightly changed.
Media properties1.png

Media Pool
Name of the media pool containing this media (uneditable).
Storage Pool  
Name of the used storage pool (uneditable).
Write Protection
This switch is set by SEP sesam itself, and can only be changed manually. When toggled to "On", the medium is not used for backups even if EOL (End-Of-Lifetime) is expired.
Backup Day
Date of the backup day (uneditable).
Locked until
It is automatically set with values from the media pool while the backup procedure is running. It can be adjusted individually.
Drive in which the media was last used (uneditable).
Next Media
In a big backup session, more than one medium can be used. This value indicates in what position this medium was used during the backup (uneditable).
Media Type
Media type of the medium (uneditable).
Numeric value of the loader, which handles the media pool.
Number of the slot in the loader. It is better to use an archive adjustment.
States if the medium is encrypted or not.
Save the changed media parameters in the database and return to the start screen.
Delete Media
Removes the data set from the archive and closes the entry mask.
Save of the changed media parameters in the database. Entry mask can be used for further changes.
No action and return to the start screen.

Properties 2

Media properties2.png

SEP sesam label of the medium, used for media identification.
Barcode information of the medium.
Shows the current occupancy of the medium in percentage (uneditable).
End Of Medium states if there is still space left on the medium.
Error Count
Accumulated count of errors of the medium on the drive.
Error Delta
Displays the difference of errors compared to the last usage.
Use Count
Counts the initialisation of the tape (uneditable).
The last SEP sesam system message.
User Comment  
Make additional notes.

Savesets and Media Actions properties

The Savesets lists all currently saved backups of the medium. You can show or hide columns by clicking a right-mouse button on the column title.

The Media Actions lists all media events, such as the introduction in the SEP sesam environment, initialization for backup, readability check, etc.

Media saveset.png

Adding a new medium

From Media -> Introduction you can insert new medium into the media-archive.

Media new medium.jpg
Media Pool
Name of the media pool to which the medium is added. Select one of the configured media pools.
Selection of drive in which the media must be initialized (depends on the selected media pool).
Type, Device, Client, Loader
Media Type
Selection of media type (pre-selection depends on the drive type).
Information sign.png Note
Utilzation of unknown SEP sesam Media alerts the user that a SEP sesam tape or medium has been entered, but is not entered in the SEP sesam database. This can happen when a tape was erased or if a tape was entered from another SEP sesam installation. Empty tapes or tapes from other programs/applications will always be overwritten. Media found in the SEP sesam database will never be overwritten.
Handling of unknown SEP sesam Media
It affects SEP sesam's bahavior, if a SEP sesam tape label is recognized on the medium, but it is not found in the database. This is the case, when a tape was removed or there is tape from another SEP sesam installation. Empty media or media written by other applications are always re-labeled. However, media, which are already in the database, will never be re-labeled.
Accept without initialization
Takes over the medium with the given label in the SEP sesam database. If te related media pool does not exist, it will automatically be created.
Label Number
Treats the media as empty and writes a new label on the tape.
Automatically assign next number
SEP sesam automatically assigns the label number for the media that should be added. By this process, the highest existing numeric value within that media pool is increased by one.
Take label from media
Creates the last five digits according to the editable text box.
Start insertion of new media
Close screen, no insertion.