Server sizing / topology feedback

Hi,

Been asking the experts on this site some questions in the last few weeks, so glad I signed up, so worth the money!  Anyway, with the feedback Ive gotten I am trying to come up with a design for our office, my skills aint great, but I want to be in a knowledagble position before consultancy, if needed.

I have attached two images, one with server hardware sizing and one with a topology.
Network is for around 50 staff, upto 35 on at any one time, mostly connecting via thin clients.
Most of the usage will be some EMR software connecting to SQL server, and Microsoft office.
Uptime during office hours is priority, this is why i cleared steer of virtulization, all eggs in one basket etc..etc..
Wanted something in place that will be easily scalable.

Just hoping to get some feedback on the hardware sizing, and the design, its pretty simple, but any feedback on that would be welcome.

Already have 2 48 port switches 10/100.  However both have 2 x gig ports, for backup and general speed performance thinking of purchasing a 12 port gig switch for servers, will be doing backups every night.

Couple of questions I have on top of any other feedback you guys can give are -
Should I jus turn the cisco 1812 into a router and let the security server be the firewall, or do you advise to double firewall ?
Is the any benefit by connecting the two 48 port routers via the gig ports together ?
Hardware-sizing.pdf
topology.pdf
lost_in_dataAsked:
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IanThCommented:
just to clarify are your servers just going to use 1 gigabit etherenet connection as you can use 2 or 4 nics in a load balanced or fault tolerance team so I would make sure you have room on your switches to enable this latter I mean have spare ports reserved for the server so you have an upgrade path
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IanThCommented:
also another thought you could use stackable switches
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andyalderSaggar maker's framemakerCommented:
Not sure what you mean by having all your eggs in one basket with virtualization. You could for example get two servers and two iSCSI SANs mirrored and use vSphere Essentials Plus which would give high availability - you could lose one server and one SAN and it would still all be running.

I'd also say your SQL server has far roo much CPU for just 4 data disks.
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lost_in_dataAuthor Commented:
Thanks for feedback so far.

Not sure what you mean IanTH about the switches, at the moment we have 3 switches, all 10/100, 2 are 48 port, one is 12.  With new hardware i was thinking of getting a 12/24 port gigabit switch as the core switch to help manage bandwith at the backend.

I will look into vSphere EP andy, yeah I figured id specc'd all the servers with alot of cpu !
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lost_in_dataAuthor Commented:
No one have any other feedback ? Yes it will work ? Its way over powered, not it wont work because ... ?

I know its a pretty open question, so I apologise.
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lost_in_dataAuthor Commented:
will give it 24 more hrs then i close.. :(
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warsawtechConsultantCommented:
Your sizing looks like you will have plenty of room to grow with for EMR. My comment has mainly to do why not go with a RAID 5 and hot spare, rather than RAID 10. Recovery is much easier from my experience. Found speed to be better.
I agree with Ianth on the fact if your servers have more than one NIC each and you team them then you are going to fill up a twelve port switch, so you would probably want at least a 16 or 24 port GB switch.
With the HIPAA regs these days i would go with the double firewall. Is your security server handling the encryption for your mobile users and other servers?
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andyalderSaggar maker's framemakerCommented:
RAID 10 much faster than RAId 5 for write, plus rebuild time after failure is much quicker.
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lost_in_dataAuthor Commented:
raid 10 is faster than 5 so I believe, and i have onsite hard drive back up so rebuild time isnt super required asap.  

The plan was to have the security server managing it all, although we have the cisco in place already so it wouldnt be hard to have that in place too.

Like ive said before, pretty new to this, teaming of nics' ? does that have any benefits?
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warsawtechConsultantCommented:
Teaming-Redundacy if you use fault tolerant, and good for load balancing. Though I only use Teaming with Intel NIC's because of many bad experiences with Broadcom NIC. Couple of articles below to glance at for teaming
http://support.microsoft.com/kb/254101
 http://www.brianmadden.com/blogs/guestbloggers/archive/2006/04/19/hp-proliant-network-adapter-teaming-explained.aspx
Correct on write on RAID 10, but read is much quicker on 5.
Actually I would probably let the Cisco handle the firewall issues and use the Security server for encryption if you're going to have all that hardware.
I'm with andyalder on the fact that Vsphere would cut down on a lot of your hardware sizing and make it much more managable you could take some of the savings and put all your drives up to 15K speed. I assume (maybe wrong) with the EMR you're going to be pushing a lot of imaging could be the reason for your hardware sizing or must have "High Availability".
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lost_in_dataAuthor Commented:
Thanks for that.

The issue I have with Vsphere, is what would I virtulize ? Managment and security I guess, sql is at the requirements placed on us by our vendor, everything I have read bout sql has lead to believe that it would benifit from a standalone machine, as with exchange, although our usage of exchange isnt going to be heavy.  

I personally dont see how it can be cost effect, because of the machines required the run these servers in virtulization will be just as expensive as they are by themselves.  I dunno, my knowledge aint all there yet.
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lost_in_dataAuthor Commented:
Thank you for your feedback
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Windows Server 2008

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