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Server Spec Advise
Question asked by Mike Saunders - March 27, 2015 at 1:06 AM
Unanswered
Hi, I have been using smartermail for approx 5 years for my clients, and im moving to a new dedicated server and wanted to know some advise on the spec im considering
 
i have approx 1000 users
 
monthly usage is approx 300,000 incoming message and 100,000 outgoing messages
 
im considering:
 
1 x Quad Core: X3450 - 2.66Ghz
Windows Server 2012 R2
32GB DDR3
4 x 512GB Solid State Drive MLC
H200 Raid Controller - Raid 10
 
does this sound OK...
 
Is it ok to put everything on 4 ssd drives in raid 10?
 
thanks for any advise

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Scarab Replied
March 27, 2015 at 10:39 AM
That configuration should be more than ample for your Users and Email Volume. We have about 300 domains and 3000 users (most of which are IMAP) with a daily email volume of 60,000 Incoming/30,000 Outgoing messages running on the following:
 
Quad Core X3450 - 2.66Ghz
Windows Server 2008R2 (will be upgraded to 2012R2 next month)
16GB ECC RAM
4xSeagate Constellation ES.3 SAS Drives (Raid-10)
Dell SAS6/iR Raid Controller
 
Very similar to your configuration (with half the RAM and physical HDD) and we still have plenty of headroom to grow (we rarely peak over 10% CPU).
 
Although we aren't running SSD drives on this server, we run them on our SANs and in our ESXi boxes with much success. They are as reliable as traditional Enterprise HDDs and we use them without hesitation for Web Servers. Personally I'm still too overly cautious to run them in heavy I/O environments such as for SQL Servers and Mail Servers, but many others here have used them successfully in their Smartermail installations without trouble or complaint .
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Matthew Titley Replied
March 28, 2015 at 10:34 AM
You are probably going overboard on the memory but it's not a big deal. I'd look into a better RAID adapter than the H200. I don't know the Dell RAID controllers as well as I do HP offerings but it looks like the H200 is older and a low performance model. Odds are the SSDs will tax that adapter. Spend a little more on a better RAID adapter with cache and you'll see much better performance. It might not matter for mail operations but for backup processes it will make a difference. The only other item I'd do some homework on is the SSD performance and compatibility in a RAID environment. Unlike typical hard drives there are big variations in performance among the SSD vendors. Also, if you're doing hot plug drives and have the capacity, get a fifth drive as a hot spare, SSD or not!
 
If you haven't considered it, look into virtualizing the server using Windows 2012 R2 Hyper-V or VMware. Makes life a whole lot simpler for backup, restore, migration, and the like. Bond your network adapters for fault tolerance and better throughput. Again, doesn't really affect mail operations but for big data throughput purposes (network backup for example) it really reduces the maintenance windows and such. Good luck.
 
Matt
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Mike Saunders Replied
April 2, 2015 at 2:45 AM
Thanks for your feedback guys

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