140 Copyright © Acronis, Inc., 2000-20104. A tape with backups written by the storage node cannot be read on a tape device, locallyattached to a machine, the agent is installed on, because of a difference in tape format. To getinformation about the readability of the archives on tapes, written by different components ofother versions of the product by means of Acronis Backup & Recovery 10, see the Tapecompatibility table (p. 49) section.5. Barcode printers are not used.4.1.3.4 RSM Media PoolsAcronis Backup & Recovery 10 uses Windows Removable Storage Manager (RSM) to manage tapecartridges belonging to tape libraries.To separate access to media by different programs the RSM uses so called Media Pools that arelogical media groups. There are two categories of media pools in the manager: System andApplication.System media pools include Free pool, Import pool and Unrecognized pool. The System pools holdmedia that are not currently used by applications. The Free pool holds media that are considered asfree and can be used by applications. The Import and Unrecognized pools are temporary pools formedia that are new in certain library.Through RSM an application can get its own pools with proper names, move media from the Freepool into its own pools, use its own pools’ media for correct purpose, return media to the Free pool,etc.Acronis Backup & Recovery 10 Storage Node manages the tapes belonging to the Acronis pool.If you fill tape library slots with unused tapes, all the tapes will be included into the Free poolautomatically.If a tape was used previously, the RSM tries to detect the registered application the tape isconcerned to. If the application is not found, the RSM will move the tape into the Unrecognized pool.If the application is not found, but the RSM database has no information about the tape, it will bemoved into the Import pool. If the RSM database has the information, the tape moves into its ownpool of the application.Acronis Backup & Recovery 10 Storage Node provides the RSM to detect the tapes written by AcronisTrue Image Echo, Acronis True Image 9.1 product families and by components of Acronis Backup &Recovery 10. The storage node will locate all tapes written in “Acronis” format into the Acronis poolat the Inventory (p. 144) operation.Acronis Backup & Recovery 10 components don’t use the Unrecognized pool. To utilize a tape fromthis pool forcibly, move the tape to the Free pool using the Removable storage snap-in (Controlpanel > Administrative tools > Computer management > Removable storage > Media pools).If a tape has moved into the Free pool, it is considered as free and will be accessible to write by any application.So the tape data will be lost.If all the backups are deleted from a tape, it will not return to the Free pool. It remains in the Acronispool as a free tape to be reused. So if a storage node needs a new tape, it finds a free tape first in theAcronis pool, then in the Free pool.Thereinafter Acronis Backup & Recovery 10 Storage Node deals only with the tapes belonging to theAcronis pool.
