So should I just go with 2 NICs for the storage server then?
In your future setup, how many NICs are you using for the storage
server and how many for the nodes? I take it you're using software
iSCSI?
On the DRBD mailing lists I've seen a couple of times that they
did tests with
bonding and they claim that a bond with more than 2 NICs will
actually
decrease performance because of the TCP reordering that needs to be
done.
That's the reason why I limit the storage connection to two NICs. I
have a
very similar to yours in the making by the way.
On Tuesday
08 June 2010 15:55:47 Jonathan Tripathy wrote:
> Hi
Michael,
>
> Thanks for the tips using SSD for the node OS
drives.
>
> Regarding the NIC, I was thinking about using this for
the nodes:
>
> http://www.intel.com/products/server/adapters/pro1000pt-dualport/pro1000pt-
>
dualport-overview.htm
>
> and this for the server:
>
>
http://www.intel.com/products/server/adapters/pro1000pt-quadport-low-profil
>
e/pro1000pt-quadport-low-profile-overview.htm
>
> Are those the
cards you were talking about? They are very cheap on ebay you
>
see...
>
> Think 4 port bonding for the server is good enough for 8
nodes?
>
> Thanks
>
>
________________________________
>
> From: Michael Schmidt [mailto:michael.schmidt@xxxxxxxxxx]
>
Sent: Tue 08/06/2010 14:49
> To: Jonathan Tripathy;
Xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] My future
plan
>
>
> Hi Jonathan,
>
> you should think about
flash or SD cards as xen-boot-drive.
> This provides you lower costs and
higher energy efficiency.
> If you mount /tmp and /var/log to an tmpfs,
this disks works very well and
> long.
>
> If you dont
need so much disk space for your storage, use sas disks.
> SAS (10k/15k)
disks provides you many more IOPs than sata disks (more IOPS
> per
$/EUR as well). And very important: A very large cache for your
raid
> controller.
>
> Intel e1000e is a pretty good
choice. This cards have a large buffer and
> generates just a few
interrupts on your CPUs (in comparison to the
> Broadcom
NICs).
>
> Best Regards
>
> Michael Schmidt
> Am
08.06.10 14:55, schrieb Jonathan Tripathy:
>
>
My future plan currently looks like this for my
VPS hosting solution, so
> any feedback would be
appreciated:
>
> Each Node:
>
Dell R210 Intel X3430 Quad Core 8GB RAM
>
Intel PT 1Gbps Server Dual Port NIC using linux
"bonding"
> Small pair of HDDs for OS
(Probably in RAID1)
> Each node will run
about 10 - 15 customer guests
>
>
>
Storage Server:
>
Some Intel Quad Core Chip
>
2GB RAM (Maybe more?)
>
LSI 8704EM2 RAID Controller (Think this
controller does 3 Gbps)
> Battery backup
for the above RAID controller
> 4 X RAID10
Arrays (4 X 1.5TB disks per array, 16 disks in total)
>
Each RAID10 array will connect to 2 nodes (8
nodes per storage server)
> Intel PT 1Gbps
Quad port NIC using Linux bonding
> Exposes
8 X 1.5GB iSCSI targets (each node will use one of these)
>
>
HP Procurve 1800-24G switch to create 1 X 4 port
trunk (for storage
> server), and 8 X 2 port trunk (for the
nodes)
>
> What you think? Any
tips?
>
>
Thanks
>
>
>
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