MSDP compression and encryption settings matrix
Four MSDP pd.conf file parameters control the compression and the encryption for individual hosts. Table: Compression and encryption settings and outcomes shows the matrix for the outcomes for the compression and the encryption parameters.
Table: Compression and encryption settings and outcomes
Parameters | Default: Compress both the backups and duplication and replication | Settings A: Compress and encrypt the backups | Settings B: Compress the backups and compress and encrypt duplication and replication | Settings C: Compress and encrypt backups and compress duplication and replication | Settings D: Compress and encrypt both backups and duplication and replication |
|---|---|---|---|---|---|
ENCRYPTION | 0 | 1 | 0 | 1 | 1 |
COMPRESSION | 1 | 1 | 1 | 1 | 1 |
OPTDUP_ENCRYPTION | 0 | 0 | 1 | 0 | 1 |
OPTDUP_COMPRESSION | 1 | 0 | 1 | 1 | 1 |
Outcomes on the disk pools | Backup MSDP: Encryption: 0 Compression: 1 Target MSDP: Encryption: 0 Compression: 1 | Backup MSDP: Encryption: 1 Compression: 1 Target MSDP: Encryption: 1 Compression: 1 | Backup MSDP: Encryption: 0 Compression: 1 Target MSDP: Encryption: 1 Compression: 1 | Backup MSDP: Encryption: 1 Compression: 1 Target MSDP: Encryption: 1 Compression: 1 | Backup MSDP: Encryption: 1 Compression: 1 Target MSDP Encryption: 1 Compression: 1 |
Notes | See the following note. | See the following note. | See the following note. |
Note:
Settings A and C have the same outcome on target storage as setting D because of the interaction of compression and encryption for the backups. If the backups are encrypted and compressed, they are also encrypted and compressed during optimized duplication and replication and encrypted and compressed on target storage. The OPTDUP_ENCRYPTION setting is ignored.
For client-side deduplication clients, a parameter on the storage server can override the pd.conf file ENCRYPTION parameter.