[ADSM-L] WAN performance

Subject:	[ADSM-L] WAN performance
From:	Tom Alverson <tom.alverson AT GMAIL DOT COM>
To:	ADSM-L AT VM.MARIST DOT EDU
Date:	Thu, 18 Feb 2016 14:03:26 -0500

I am seeing very poor WAN performance on all of my (wan based) TSM
backups.  Due to the latency (40 msec typical) I normally only get about
20% of the available bandwidth used by a TSM backup.  With EMC Networker I
get over 90% utilization.  I have already set all of these recommended
options:

RESOURCEUTILIZATION 2

TXNBYTELIMIT 2097152

TCPNODELAY YES

TCPBUFFSIZE 512

TCPWINDOWSIZE 2048

LARGECOMMBUFFERS YES


Does anyone know of anything else that could help performance?  Has anyone
used a Riverbed accelerator for TSM backups?


Tom

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