I realise this thread is quite old but rather than start a new one for the same question can anyone tell me:
Does turning the encryption setting to 'None' for a backup group (eg encryption of a backup) increase the performance of the backup in terms of time taken to complete?
Disabling encryption for backups running across a LAN is unlikely to improve backup performance. The bottleneck for backup performance is generally the client filesystem I/O performance which is typically in the 100 GB/hr to 300 GB/hr range. For gigabit Ethernet connections, the raw throughput will be around 350GB/hr and Avamar compresses data by a factor of roughly 2:1 so our logical network throughput will be in the 700GB/hr range. If the I/O performance is the bottleneck, turning off encryption won't gain you anything.
For backups running across a WAN or a slow LAN link, the network may be the bottleneck in which case disabling encryption may give you a performance boost but it's unlikely to be significant -- probably less than 10%.
Avamar Exorcist
462 Posts
0
April 2nd, 2010 05:00
Which of the following are you interested in?
1) encrypted files which an Avamar client will back up to an Avamar server
2) "in-flight" encryption of data between an Avamar client & Avamar server
3) "at-rest" encryption of data as stored on an Avamar server
ae86levin
70 Posts
0
October 30th, 2013 20:00
I realise this thread is quite old but rather than start a new one for the same question can anyone tell me:
Does turning the encryption setting to 'None' for a backup group (eg encryption of a backup) increase the performance of the backup in terms of time taken to complete?
If so is the difference significant?
ionthegeek
2 Intern
•
2K Posts
0
October 31st, 2013 10:00
Disabling encryption for backups running across a LAN is unlikely to improve backup performance. The bottleneck for backup performance is generally the client filesystem I/O performance which is typically in the 100 GB/hr to 300 GB/hr range. For gigabit Ethernet connections, the raw throughput will be around 350GB/hr and Avamar compresses data by a factor of roughly 2:1 so our logical network throughput will be in the 700GB/hr range. If the I/O performance is the bottleneck, turning off encryption won't gain you anything.
For backups running across a WAN or a slow LAN link, the network may be the bottleneck in which case disabling encryption may give you a performance boost but it's unlikely to be significant -- probably less than 10%.