From: Robert LeBlanc on
On Sun, Apr 11, 2010 at 9:03 AM, ravi channavajhala <
ravi.channavajhala(a)dciera.com> wrote:

> WAFS (Wide Area File System) appliances can be very well deployed for this
> sort of thing precisely. Unfortunately, I don't know of any opensource
> project for WAFS. However, commercial solutions such as Riverbed, Expand
> Networks, CISCO/WAFS, Juniper/Peribit do exist.
>
>
So far, this is the direction that we may go. We have looked at a Riverbed
product, it's good to know alternatives. This may not be as much of an issue
as it was in the past as I believe we my get a network upgrade that will
negate the need for this.

Thanks,

Robert LeBlanc
Life Sciences & Undergraduate Education Computer Support
Brigham Young University
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From: Stan Hoeppner on
Robert LeBlanc put forth on 4/11/2010 8:19 PM:
> On Sun, Apr 11, 2010 at 9:03 AM, ravi channavajhala <
> ravi.channavajhala(a)dciera.com> wrote:
>
>> WAFS (Wide Area File System) appliances can be very well deployed for this
>> sort of thing precisely. Unfortunately, I don't know of any opensource
>> project for WAFS. However, commercial solutions such as Riverbed, Expand
>> Networks, CISCO/WAFS, Juniper/Peribit do exist.
>>
>>
> So far, this is the direction that we may go. We have looked at a Riverbed
> product, it's good to know alternatives. This may not be as much of an issue
> as it was in the past as I believe we my get a network upgrade that will
> negate the need for this.

I would think it would be cheaper and more straight forward to replace the
GbE port on each end of the fiber link with a 10GbE port than to deal with
the complexity of caching and replication, or other such options, especially
for two buildings on the same campus. The fiber link is on campus and thus
you control any right-of-way issues, correct?

If this is the case, upgrading the link speed on the fiber is definitely the
way to go. If multiple pairs were run when the line was originally
trenched, as is customary, setup ISL bonding of two 10GbE links between the
two buildings' switches. Problem solved. Make sure you have at least one
10GbE NIC (preferably two NICs bonded) in the Samba server that exports the
data on the disk array or the fat pipe between the buildings won't matter much.

It will be interesting to see what Samba bottlenecks you run into after you
get the big phat pipes setup.

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Stan
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From: Robert LeBlanc on
On Sun, Apr 11, 2010 at 7:47 PM, Stan Hoeppner <stan(a)hardwarefreak.com>wrote:
>
> I would think it would be cheaper and more straight forward to replace the
> GbE port on each end of the fiber link with a 10GbE port than to deal with
> the complexity of caching and replication, or other such options,
> especially
> for two buildings on the same campus. The fiber link is on campus and thus
> you control any right-of-way issues, correct?
>
> If this is the case, upgrading the link speed on the fiber is definitely
> the
> way to go. If multiple pairs were run when the line was originally
> trenched, as is customary, setup ISL bonding of two 10GbE links between the
> two buildings' switches. Problem solved. Make sure you have at least one
> 10GbE NIC (preferably two NICs bonded) in the Samba server that exports the
> data on the disk array or the fat pipe between the buildings won't matter
> much.
>
> It will be interesting to see what Samba bottlenecks you run into after you
> get the big phat pipes setup.
>
>
Although the buildings are on the same campus (multiple buildings about 8
total that we occupy and only parts of building for most of the buildings)
we don't have control over the network. That is in the hands of the campus
IT organization and they like things done a certain way. We can light some
fibre, but it's only point to point and we don't have that much fibre
running to our building to connect all the buildings, plus the expense would
be astronomical as we can't tie into their network and so connection in the
other buildings would be limited. Since they are finally deciding to upgrade
the core switching to 10GbE, they are possibly putting our building on the
list to get a 10GbE link first. I think that would alleviate the biggest
part of the problem, as we suspect that most of the storage will sit idle
and not really accessed. Since all the desktops are only running 100 Mb
connections, it gives us enough concurrent connections that we
feel comfortable with.

Robert LeBlanc
Life Sciences & Undergraduate Education Computer Support
Brigham Young University
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From: Adam on
Ever heard of glusterfs?
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From: Robert LeBlanc on
On Sun, Apr 11, 2010 at 10:18 PM, Adam <squeezer99(a)gmail.com> wrote:

> Ever heard of glusterfs?
>

Yes, I don't think it works well in a geography diverse clusters though.
Lustre has this same problem. I could be wrong.

Robert LeBlanc
Life Sciences & Undergraduate Education Computer Support
Brigham Young University
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