[General] GAP Inc (gapinc.com / gap.com) moves from windows to linux

[Burhan Khalid]

You have to keep in mind that banks have to deal with outside regulatory
requirements so their blades are also split into DR sites, replication,
hot-swaps, etc.

A lot of times, for security reasons, they don't let computers run more than
one service at one time; so most of the time the reason they are going for
blades is for power/cooling/density reasons; not actually because they are
utilizing the server completely.

For example -- they normally don't run two 'core' services on the same
physical machine. So, you would rarely see the BDC and lets say print
services running on the same physical machine.

This is also the reason why virtualization is such a hot topic because it
allows for isolation of machines on the same physical host; alleviating (to
some extent) the problem that one vulnerability brings down the two
services.

1000 blades is nothing:

16 blades per chassis = 72 chassis, each is 9U high so that means you can
fit all that into 16 42U cabinets.

Compare that with average 2U server, and 1000 servers will fit in 48
cabinets.

48 vs. 16, just on space -- not to mention cooling and cabling, etc.

Regards,
--
Burhan

On Tue, Aug 4, 2009 at 1:21 PM, Majed B. <majedb at gmail.com> wrote:

> Isn't that too much?! I knew that NBK has a lot of hardware there, but
> 1000 blades?!?!?! I know that they have many pSeries boxes, too!
>
> Do you think they actually track their software's performance, or just
> keep dumping hardware at the problem? :/
>
> On Tue, Aug 4, 2009 at 9:36 AM, Burhan Khalid<burhan.khalid at gmail.com>
> wrote:
> > KFH runs their entire systems on approx. 650 blades running vmware, so
> 1500
> > blades isn't all that much.
> >
> > PWC has around 500 blades, NBK has close to 1000 blades.
> >
> > All IBM by the way.
> --
>        Majed B.
>
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