The replicate target server storage is ISILON.  The source servers are
internal disk and/or tape (if migrated due to lack of disk space).  All are
RHEL and all ISP servers are 7.1.7.300.  Yes we are looking at upgrading to
8.x but are seriously concerned due to the TLS enforcement impact.

On Fri, Apr 27, 2018 at 10:52 AM, Rhodes, Richard L. <
rrhodes AT firstenergycorp DOT com> wrote:

> So the pools are on Isilon via NFS.  I assume the OS is Linux.
>
> We've use DataDomain as a NFS target for file pools over 10G ethernet.
> We've fought performance issues with this for years.  The AIX NFs stack is
> really bad/slow - about 100mb/s through a single mount point, and even then
> it varies all over the place.  Our admins have tested Linux to DD and it's
> better, but I don't remember the numbers.  It's not something we actually
> use with TSM.  Now, Oracle writing directly to DataDomain via NFS via
> Oracle's internal DNFS stack is fast - 600-700MB/s! The Oracle processing
> shows it's not the DD that's the bottleneck.
>
> You might want to test NFS performance.
>
> Rick
>
>
>
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager <ADSM-L AT VM.MARIST DOT EDU> On Behalf Of 
> Zoltan
> Forray
> Sent: Thursday, April 26, 2018 2:46 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [EXTERNAL] Improving Replication performance
>
> As we get deeper into Replication and my boss wants to use it more and more
> as an offsite recovery platform.
>
> As we try to reach "best practices" of replicating everything, we are
> finding this desire to be difficult if not impossible to achieve due to the
> resource demands.
>
> Total we want to eventually replicate is around 700TB from 5-source servers
> to 1-target server which is dedicated to replication.
>
> So the big question is, can this be done?
>
> We recently rebuilt the offsite target server to as big as we could afford
> ($38K).  It has 256GB of RAM.  64-threads of CPU. Storage is primarily
> 500TB of ISILON/NFS. Connectivity is via quad 10G (2-for IP traffic from
> source servers and 2-for ISILON/NFS).
>
> Yet we can only replicate around 3TB daily when we backup around 7TB.
>
> Looking for suggestions/thoughts/experiences?
>
> All boxes are RHEL Linux and 7.1.7.300
>
> --
> *Zoltan Forray*
> Spectrum Protect (p.k.a. TSM) Software & Hardware Administrator
> Xymon Monitor Administrator
> VMware Administrator
> Virginia Commonwealth University
> UCC/Office of Technology Services
> www.ucc.vcu.edu
> zforray AT vcu DOT edu - 804-828-4807
> Don't be a phishing victim - VCU and other reputable organizations will
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--
*Zoltan Forray*
Spectrum Protect (p.k.a. TSM) Software & Hardware Administrator
Xymon Monitor Administrator
VMware Administrator
Virginia Commonwealth University
UCC/Office of Technology Services
www.ucc.vcu.edu
zforray AT vcu DOT edu - 804-828-4807
Don't be a phishing victim - VCU and other reputable organizations will
never use email to request that you reply with your password, social
security number or confidential personal information. For more details
visit http://phishing.vcu.edu/