Burned by Eschewing Best Practices
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-Corbin- May 25, 2017 at 9:33 PM
Honestly, they are suggesting the method we all followed back int the 90s mainly because of how expensive hard drive space was. The thought was to put the OS on a fast drive and everything else on slower, larger drives. Now the recommended method is to do one big raid 10. Hard drive space is cheap, and raid 10 give the redundancy and speed. There are cases for raid 6 and SQL servers, but those aren't the norm.
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-Corbin- May 25, 2017 at 9:39 PM
I should have mentioned, virtual (Microsoft or VMware) servers are where most are pushing to now days because the recovery is faster and can be done to any hardware. I drank that Kool-Aid some years ago when i tested it and have loved it ever since.
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cavemanager May 25, 2017 at 9:43 PM
-Corbin- wrote: I should have mentioned, virtual (Microsoft or VMware) servers are where most are pushing to now days because the recovery is faster and can be done to any hardware. I drank that Kool-Aid some years ago when i tested it and have loved it ever since.I also forgot to mention that in my original post that I had also been considering doing a virtual Exchange server. My CTO is also a bit old-school and feels more comfortable having a separate physical server for email, just in case. But we did just get a brand new Dell SAN this year and we have a pretty killer virtual environment (vmware 6) and this is probably the direction we should be going. Maybe I will try to convince him again..
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-Corbin- May 25, 2017 at 10:07 PM
Nothing wrong with separating services in my mind. This is one reason the virtual setup shines so well.
Tomorrow morning you'll get more suggestions as more peeps read over this, but this is what's worked well for me.
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CrimsonKidA May 25, 2017 at 11:10 PM
-Corbin- wrote: Now the recommended method is to do one big raid 10. Hard drive space is cheap, and raid 10 give the redundancy and speed.^ This, 100% no question. Also, if you are dedicating one physical server to a single Windows OS (as opposed to a hypervisor host) it's a complete waste of resource
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CrimsonKidA May 25, 2017 at 11:14 PM
cavemanager wrote: Basically, we are a Dell shop, and we have about 18 Dell servers and I have seen that the majority of them have the OS on a RAID 1 volume (2 drives) and then any additional data volumes are always in a RAID 5 config. This seems to be their thing and that's how my VAR wants to set this new server up as well. So I mentioned all this to my VAR that I wanted to go with this drive configuration, but then he comes back at me and claims that I will still want to have a separate physical volume for my OS with two drives in RAID 1 and that way it will be easier to add drives if we need to down the road. Then he finally just responds that I need to trust him on this one and that he has X amount of years of experience, etc. He had also told me that "nobody uses RAID 10", which, according to the Internet, is not true.Fire your VAR.
No, seriously. Like yesterday, FIRE THEM. They are either incompetent or (worse yet) exploiting your for own their bottom line!
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CrimsonKidA May 25, 2017 at 11:22 PM
cavemanager wrote: I also forgot to mention that in my original post that I had also been considering doing a virtual Exchange server. My CTO is also a bit old-school and feels more comfortable having a separate physical server for email, just in case. But we did just get a brand new Dell SAN this year and we have a pretty killer virtual environment (vmware 6) and this is probably the direction we should be going. Maybe I will try to convince him again.. + expandIt's not "probably" the direction you should be going, it definitely is. Yours (and most companies) should have been moving to a fully virtualized environment 5-7 years ago at least. There are literally no negatives, only positives. Your CTO's "old school" mentality is most likely just rooted in stubbornness and ignorance. Do the research and present it to him. This is really a black-and-white issue at this point. There is some merit to still keeping a physical DC, but that's the only one I know of.
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Northlandeng May 26, 2017 at 12:08 AM
CrimsonKidA wrote: Fire your VAR. No, seriously. Like yesterday, FIRE THEM. They are either incompetent or (worse yet) exploiting your for own their bottom line!^This!
If your VAR refuses deliver what you are asking for, they are not adding any value and you may as well just order what you want directly from Dell.
Edit: And yes, you are on the right track thinking OBR10. And I would definitely push for virtualization, even if your exchange server is the only VM on this host.
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toby wells May 26, 2017 at 12:54 AM
Neither setup is correct...
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Mail in 365
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Virtualise all servers!
The idea that anyone would be configuring physical devices in 2017 is crazy. Virtualise all workload
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adrian_ych May 26, 2017 at 1:06 AM
toby wells wrote: Neither setup is correct... - Mail in 365 - Virtualise all servers! The idea that anyone would be configuring physical devices in 2017 is crazy. Virtualise all workloadsI do agree that virtualization is the way to go for application servers.....
Even for instances that you may not want to go towards cloud email (O365 or G-suite) for whatever reasons, you should consider virtualizing the servers....
........
Aside to your question, always use RAID 10 and not RAID 1 for OSe and RAID 1 for Data (in your case of 4 HDD). If you have not purchased the server yet, do consider getting a 5th HDD for hot-spare since it is a Dell and the hot spare will kick in in case of HDD failure and Dell may take 4 hrs to come down to replace the faulty HDD.
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Alex.Gaft May 26, 2017 at 1:45 AM
We use exchange on VMware for our 3000 accounts without any problems, no need to record here all the pros for virtualization. Virtualization and cloud are the future.
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ICH May 26, 2017 at 3:10 AM
Quite simply you are right and the VAR is wrong. Do NOT trust him, no matter how many years experience he is quoting you. He is simply WAY behind the curve here. OBR10 (One Big RAID 10) has been best practice for several years now. Find a new VAR. I would not give anyone the time of day if they were spouting the rubbish that your VAR is. If he wants to play who can p!ss highest up the wall on experience, I have been an IT pro since 1979.
It is very easy to find yourself resistant to new ideas, and to rely on what you know has worked for you in the past, but you have to stay up to date, and embrace the changes in the industry, or you become irrelevant. The VAR are not only offering bad advice, they are rejecting the correct way of doing things, for whatever reason, either to increase their profit margin or simply due to incompetence. Your VAR is now irrelevant and you should switch to a company that is offering up to date ideas.
And yes, everything should be virtual, including Exchange if you are running it on-premise. -
cavemanager
Anaheim
OP
cavemanager May 26, 2017 at 7:03 AMICH wrote: Quite simply you are right and the VAR is wrong. Do NOT trust him, no matter how many years experience he is quoting you. He is simply WAY behind the curve here. OBR10 (One Big RAID 10) has been best practice for several years now. Find a new VAR. I would not give anyone the time of day if they were spouting the rubbish that your VAR is. If he wants to play who can p!ss highest up the wall on experience, I have been an IT pro since 1979. It is very easy to find yourself resistant to new ideas, and to rely on what you know has worked for you in the past, but you have to stay up to date, and embrace the changes in the industry, or you become irrelevant. The VAR are not only offering bad advice, they are rejecting the correct way of doing things, for whatever reason, either to increase their profit margin or simply due to incompetence. Your VAR is now irrelevant and you should switch to a company that is offering up to date ideas. And yes, everything should be virtual, including Exchange if you are running it on-premise.Thanks for the advice. I see that a lot of you are saying OBR10 is recommended and best practice now. Can you or someone else provide me with a source that says this, or is it just general knowledge?
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OP
cavemanager May 26, 2017 at 7:06 AM-Corbin- wrote: Honestly, they are suggesting the method we all followed back int the 90s mainly because of how expensive hard drive space was. The thought was to put the OS on a fast drive and everything else on slower, larger drives. Now the recommended method is to do one big raid 10. Hard drive space is cheap, and raid 10 give the redundancy and speed. There are cases for raid 6 and SQL servers, but those aren't the norm. http://www.thecloudcalculator.com/calculators/disk-raid-and-iops.htmlCan you show me any sources that say one big RAID 10 volume is recommended? I notice a lot of you are saying that, and it would be nice to have something to show my VAR plus I would just like to see it.
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CrimsonKidA May 26, 2017 at 8:22 AM
cavemanager wrote: Can you show me any sources that say one big RAID 10 volume is recommended? I notice a lot of you are saying that, and it would be nice to have something to show my VAR plus I would just like to see it. + expandORB10 is just a RAID10 comprised of more than the minimal 4 disks, yes.
As for an article to read about it, Scott Alan Miller (who I bet might have some choice words for your, ahem..."VAR") wrote one that addresses your exact concerns in this thread. Have a look: http://www.smbitjournal.com/2012/11/one-big-raid-10-a-new-standard-in-server-storage/
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toby wells May 26, 2017 at 8:22 AM
cavemanager wrote: Can you show me any sources that say one big RAID 10 volume is recommended? I notice a lot of you are saying that, and it would be nice to have something to show my VAR plus I would just like to see it. + expandIts like asking an architect why arches are good for bridges
They just are
RAID 5 was deprecated by most vendors many years ago, I think Dell were last to issue something but that was in 2012!
https://community.spiceworks.com/topic/251735-new-raid-level-recommendations-from-dell
5 Years since its probably one of the most discussed topics on Spiceworks
The maths and practical experience is just overwhelming
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CrimsonKidA May 26, 2017 at 8:24 AM
toby wells wrote: Its like asking an architect why arches are good for bridges They just are + expandToby, while you are right, this is the same kind of lip-service (no offense) he's getting from his VAR. He needs facts here to back up his argument.
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Northlandeng May 26, 2017 at 8:28 AM
One Big RAID 10 - A New Standard In Server Storage
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CrimsonKidA May 26, 2017 at 8:35 AM
toby wells wrote: Neither setup is correct... - Mail in 365 - Virtualise all servers! The idea that anyone would be configuring physical devices in 2017 is crazy. Virtualise all workloadsVirtualize everything. It's an open-and-shut case, yes. Not to steer the thread too far off course, but...
O365 or Hosted Exchange while commonly accepted as "best practice" are, in reality (or at least my reality), not always the most economical solution. The "hidden costs" of managing Exchange on-premise (we're talking your wage/salary here) are often overhyped and inflated, especially if:
- The business already owns the hardware (hypervisor hosts)
- The IT Pro administering Exchange would be employed full-time/salaried regardless of keeping Exchange on-prem or outsourcing to O365/HE
We only have about 100 mailboxes and I've ran the numbers ($4/mo per mailbox for HE) on multiple occasions by myself and even with our CFO and it has never came out cheaper to move to O365 or even HE (vs an Exchange 2016 migration). Just another perspective for you. Tip of the iceberg here, really. Google "pros and cons of moving to O365" and you will find a LOT of information against it!
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Evan7191 May 26, 2017 at 8:58 AM
I agree with the others that you should use one big RAID10.
I won't say that you should fire your VAR, but you should not let a sales person design a system for you. Sales exist to sell products in order to make money. Their goal is for you to purchase their goods and/or services. Their goal is not to give you the best solution for your needs. You must look out for your environment and tell them what you need. If they won't sell what you need, then you can find a different VAR who will.
