Networker

[Networker] NSR76 SP4 & Optimized disk reading ...

2012-11-14 04:32:47
Subject: [Networker] NSR76 SP4 & Optimized disk reading ...
From: FAIDHERBE Thierry <thierry.faidherbe AT FOREM DOT BE>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 14 Nov 2012 09:26:57 +0000
Hello,

Reading 7.6 SP4 release notes, I came across the following section:

--------------
Optimized disk reading

NetWorker 7.6 SP4 introduces a new feature to optimize data read performance
from the client system during standard file system backups.

While previous releases used fixed 64 KB blocks while reading files from a 
client,
NetWorker 7.6 SP4 introduces an intelligent algorithm which chooses an optimal
block size value in the range of 64 KB and 8 MB based on the current read
performance of the client system. This discovery occurs during the actual data
transfer and does not add any overhead to the backup process, while potentially
significantly increasing disk read performance.

Note: Read block size is not related to device block size used for backup, 
which remains
unchanged.

EMC NetWorker Release 7.6 and Service Packs Release Notes
This feature is transparent to the rest of the backup process and does not 
require
any additional configuration.

--------

Did someone notice improvements in backup speed thanks to new read algorithm ?

Warm regards,

TH

Kind regards - Bien cordialement - Vriendelijke groeten,

Thierry FAIDHERBE
Backup/Storage & System Management

LE FOREM
Département des Systèmes d'Information
Direction Infrastructure

Boulevard Tirou, 104  Tel:    +32 (0)71/206730
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