content_image/991703.jpg
Enable the lock name to prevent a collision when HPDP tries to use the same physical device in several backup sessions at the same time. Complete these steps as shown in Figure 16-6: 

1. In this example, select the VTL_LTO3_01 drive from the Drives  folder. 

2. Click the Settings  tab; you see your Default Media Pool, VTL_TAPE_ONSITE. 

3. Click the Advanced  tab; the Advanced Options window opens. 

4. Click the Other  tab and select the Use Lock Name  check box. 

<img src='content_image/991703.jpg'>

## 16.2.4 Disabling compression, encryption, and CRC chksum 

Compression, encryption, hash-based application deduplication, cyclic redundancy check (CRC) of data integrity, and other processes, affect the ProtecTIER deduplication factoring ratio. Avoid using these techniques when the IBM ProtecTIER solution is implemented as a component of your backup environment. 

Although HPDP offers these features, ensure that they are disabled for virtual tape devices that provisioned by the ProtecTIER product. Figure 16-7 on page 236 shows how to deactivate those options by clearing them: 

1. Disable compression, encryption, and CRC by selecting a file system, in this example FS_Daily_Incr. 

2. Then, click the Options  tab, and the Filesystem Options window opens. 

3. Clear the Software compression  and Encode  check boxes. 

