Updates to the Exchange 2010 Server Role Requirements Calculator

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

safa — Thu, 01 Apr 2010 22:36:54 GMT

I am trying to use the Sizer with archiving option. Trying to put the archive size in the Input tab translated into many copies according to the number of members in DAG. Can I keep one copy of archived exchange 2010 data?

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

iamme — Mon, 22 Mar 2010 06:24:59 GMT

Looks fixed to me! Thanks. :)

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

Exchange — Sat, 20 Mar 2010 01:09:53 GMT

iamme - I uploaded v6.3 to the web which I believe will correct your issue. Let me know if you have any other issues.

Ross

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

Ross Smith IV — Thu, 18 Mar 2010 20:33:40 GMT

iamme-

regarding

"Now let's turn on Site Resilience. I also increased total number of HA copies to 4 and set the Site Resilient Copies to 1. I was offered 2 for Site Resilient Copies which doesn't make much sense since I set the mailbox servers in the Primary Datacenter to 3 and total copies to 4. 4-3 is 1 so why did it offer 2 for Site Resilient Copies? "

The second issue is a bug.

Ross

I'm not sure why you think you can't have 2 copies in the primary datacenter with 3 mailbox servers and 2 copies in the secondary datacenter. The number of mailbox servers in the primary datacenter only dictates the maximum number of copies you can have there - so with 3 servers you can have a maximum of 3 copies, but you could also deploy 2 copies.

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

iamme — Wed, 17 Mar 2010 05:33:56 GMT

Ross,

I see the issue is still there. Let me go through an example with the default tier settings (24,000 mailboxes):

Single Site - 3 mailbox servers (modified from default of 3) and 3 copies.

Calculator Results:
Normal Run Time - 33 databases
After first server failure - 50 databases
MaximumActivedatabases set to 50

Now let's turn on Site Resilience. I also increased total number of HA copies to 4 and set the Site Resilient Copies to 1. I was offered 2 for Site Resilient Copies which doesn't make much sense since I set the mailbox servers in the Primary Datacenter to 3 and total copies to 4. 4-3 is 1 so why did it offer 2 for Site Resilient Copies?

Anyways, I now see that I can support 2 server failures but it tells me that my new maximumactivedatabases is 99? This doesn't make sense even with automatic *over to a DAG member in another site. It should still be 50 in my eyes. Before, if 1 server failed, 2 servers would pick up the whole slack and your maximumactivedatabases was 50. Now we're adding a 4th server and if 2 servers go down, you still have 2 servers like before picking up all the slack. Maximumactivedatabases should still be 50.

Seems like 2 bugs to me.

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

Exchange — Sat, 27 Feb 2010 21:21:37 GMT

iamme -

I'm actually improving the reporting of this in the next release. Essentially when you move to a multi-site architecture, you support the ability to have cross-site *over events. So you could survive two server failures (in certain situations within the primary datacenter) because some of the databases can be activated in the secondary site.

Ross

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

Exchange — Sat, 27 Feb 2010 21:19:47 GMT

Folks, I wanted to let you know of an issue in the v4.5 calc - if you are designing configurations to support multiple DAGs, there is an issue in the reporting of the number of processor cores you need for the various roles. basically the calculator is making an assumption of only having a single DAG in the environment. So you will need to multiply the processor cores per role by the number of DAGs you are deploying to see the full number of cores required. This will be fixed in the next release.

Ross

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

iamme — Sun, 21 Feb 2010 06:12:59 GMT

Odd, when I specify that I have 3 servers in my single site, it tells me to set MaximumActiveDatabases to let's say 30 and that I could support 1 server failure. But if I then specify I have a second site, suddenly my main site allows me to support up to 2 failures in just my primary site and then my MaximumActiveDatabases shoots up to support all of my databases (let's say 3). Not sure why that happened and seems like a bug.

Maybe in the future we can say how many server failures we'd like to account for in each datacenter.

re: Updates to the Exchange 2010 Mailbox Server Role Requirements Calculator

Exchange — Sun, 21 Feb 2010 00:34:52 GMT

BR - there really isn't a timeframe. I guess worst case, it is the amount of space required for the lifetime of the storage assuming the inputs you chose remain the same.

Ross

re: Exchange 2010 Mailbox Server Role Requirements Calculator Updated to Version 3.5

BR — Wed, 17 Feb 2010 14:10:13 GMT

I have a question plz ,
the Database Space Required / Replica calculation result is per what ? Day , month , yeah ?!