ACRONIS Backup & Recovery 11 Guide de l'utilisateur Page 176

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176 Copyright © Acronis, Inc., 2000-2011
6.3.2.5 Parallel operations
Acronis Backup & Recovery 11 can simultaneously perform operations with various components of a
tape device. During an operation that uses a drive (backing up, recovering, rescanning (p. 186), or
erasing (p. 185)), you can launch an operation that uses a changer (moving (p. 184) a tape to another
slot or ejecting (p. 185) a tape) and vice versa. If your tape library has more than one drive, you can
also launch an operation that uses one of the drives during an operation with another drive. For
example, several machines can back up or recover simultaneously using different drives of the same
tape library.
The operation of detecting the new tape devices (p. 181) can be performed simultaneously with any
other operation. During inventorying (p. 187), no other operation is available except for detecting the
new tape devices.
Operations that cannot be performed in parallel are queued.
6.3.2.6 Limitations
The limitations of tape device usage are the following:
1. The consolidation (p. 370) of backups located on tapes is not possible. As a result, usage of
backup schemes has certain peculiarities (p. 175).
2. The deduplication (p. 371) of backups located on tapes is not possible.
3. Simplified naming of backup files (p. 65) is not possible for backups stored on tapes.
4. You cannot recover under an operating system from a backup stored on tapes if the recovery
requires the operating system reboot. Use bootable media to perform such recovery.
5. You cannot recover individual files from a disk-level backup stored on tapes. For that reason, the
data catalog (p. 371) does not show files and folders in disk-level backups.
6. You can validate (p. 211) any backup or archive stored on tapes, but you cannot select for
validation an entire tape-based vault or tape device.
7. You cannot attach (p. 167) or detach a tape-based vault.
8. A managed tape-based vault cannot be protected with encryption. Encrypt your archives instead.
9. You cannot create a managed tape-based vault (p. 162) with the backward compatibility
property. This means that Acronis Backup & Recovery 10 agents cannot back up to Acronis
Backup & Recovery 11 managed tape-based vaults.
10. The software cannot simultaneously write one backup to multiple tapes or multiple backups
through the same drive to the same tape.
11. Devices that use the Network Data Management Protocol (NDMP) are not supported.
12. Barcode printers are not supported.
6.3.2.7 Readability of tapes written by the older Acronis products
The following table summarizes the readability of tapes written by Acronis True Image Echo, Acronis
True Image 9.1 and Acronis Backup & Recovery 10 product families in Acronis Backup & Recovery 11.
The table also illustrates the compatibility of tapes written by various components of Acronis Backup
& Recovery 11.
...is readable on a tape device attached to a
machine with...
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