For everyone...
http://www.symantec.com/business/support/index?page=content&id=TECH51967
Hope it helps.
By the way, looks like up to 256 is ok now.
--tmac
*Tim McCarthy* *Principal Consultant*
Clustered ONTAP Clustered ONTAP NCDA ID: XK7R3GEKC1QQ2LVD RHCE5 805007643429572 NCSIE ID: C14QPHE21FR4YWD4 Expires: 08 November 2014 Expires w/release of RHEL7 Expires: 08 November 2014
On Wed, Feb 27, 2013 at 3:35 AM, Jayanathan, David djayan@qualcomm.comwrote:
Hi Tim,****
This mail from you caught my eye because our backup environment heavily relies on NDMP and we are always looking for ways to improve it. Recently our backup team has started to change their architecture to do 3-way NDMP over 10GbE to a master server which has drives attached to it via tape SAN and has multiplexing/pooling enabled.****
Were you able to dig up what specific environment variable you were thinking of to change the backup blocking factor?****
Thanks in advance J****
-David****
*From:* toasters-bounces@teaparty.net [mailto: toasters-bounces@teaparty.net] *On Behalf Of *tmac *Sent:* Wednesday, February 20, 2013 11:53 AM *To:* Klise, Steve
*Cc:* toasters@teaparty.net *Subject:* Re: NDMP speed question****
You know, another way to speed up backup is to change the backup blocking factor.****
I think the default is 63 and if you are going over the network, it is certainly feasible to make it 126.****
If I recall, there is an environment variable that can be set/modified to change the blocking factor.****
--tmac****
*Tim McCarthy*****
*Principal Consultant*****
[image: Image removed by sender.] [image: Image removed by sender.] [image: Image removed by sender.]****
Clustered ONTAP Clustered ONTAP****
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Expires: 08 November 2014 Expires w/release of RHEL7 Expires: 08 November 2014****
On Wed, Feb 20, 2013 at 1:38 PM, Klise, Steve klises@sutterhealth.org wrote:****
Just a lame question here, but how many and type of spindles are behind the volume you are dumping? If you only have a handful of drives, could be the culprit.****
-----Original Message----- From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Scott Eno Sent: Wednesday, February 20, 2013 10:36 AM To: Patrick Giagnocavo Cc: toasters@teaparty.net Subject: Re: NDMP speed question
Likely a slight boost, but I am at the mercy of the network guys. I do what they tell me.
On Feb 20, 2013, at 1:17 PM, Patrick Giagnocavo xemacs5@gmail.com wrote:
Stupid question, but isn't 10Gbe a lot faster with e.g. 9000 byte MTU?
I thought I saw in the original post, a 1500 byte MTU:
From original post:
e1a: flags=0x5f4e867<UP,BROADCAST, RUNNING,MULTICAST,TCPCKSUM,NOWINS> mtu 1500
if the 1500 byte MTU can be changed to 9000 without interrupting service
(depends on switch and other configuration, most likely), you might see a speed bump.
Cheers
Patrick _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
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