SHREDDING

The SHREDDING option specifies whether shredding of deleted sensitive data is performed automatically or manually. Shredding applies only to data in storage pools that have been explicitly configured to support shredding.

Syntax


>>-SHREDding--+-AUTOmatic-+------------------------------------><
              '-MANual----'

Parameters

AUTOmatic: Specifies that shredding occurs automatically as sensitive data is deleted. Use this option to shred sensitive data as soon as possible after it is deleted. If the SHREDDING option is not specified, this is the default behavior. If there is an I/O error during automatic shredding, an error is reported, and shredding of the current object halts. If the I/O error cannot be corrected, you might need to run shredding manually and use the IOERROR keyword.
MANual: Specifies that shredding occurs manually, only when the SHRED DATA command is invoked. Use this option to control when shredding takes place, in order to ensure that it does not interfere with other server activities.
Tip: If you specify manual shredding, run the SHRED DATA command regularly, at least as often as you perform other routine server-maintenance tasks (for example, expiration, reclamation, and so on). Doing so can prevent performance degradation of certain server processes (in particular, migration). For best results, run SHRED DATA after any operation (for example, expiration and migration) that deletes files from a shred pool.

Examples

Specify that Tivoli® Storage Manager automatically shreds data in a storage pool configured for shredding after that data is deleted:

shredding automatic