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From: Denis Cook on 14 Jun 2010 19:50
SBS2003 R2 running Exchange:

I need to increase the size of a mailbox above 2G (I know there are admin
issues with >2G but needs must).
If I try and increase the mailbox size setting on the user account or
mailbox store properties etc I get a max 2G warning dialogue!

Is this due to using cache'd mode?

Is there any way round this 2G limit if not due to cache mode!?

Ta.
From: Rich Matheisen [MVP] on 14 Jun 2010 22:37
On Mon, 14 Jun 2010 16:50:17 -0700, Denis Cook
<DenisCook(a)discussions.microsoft.com> wrote:

>SBS2003 R2 running Exchange:
>
>I need to increase the size of a mailbox above 2G (I know there are admin
>issues with >2G but needs must).
>If I try and increase the mailbox size setting on the user account or
>mailbox store properties etc I get a max 2G warning dialogue!
>
>Is this due to using cache'd mode?
>
>Is there any way round this 2G limit if not due to cache mode!?

The limitation is in the UI (it uses a signed integer and as soon as
you try to put a value larger than 2GB in there the high-order bit
gets turned on and the value looks like it's a negative number), not
the actual value that can be stored in the value.

You can use ADSI (or LDP) and modify the value (in KB) in the AD
directly.

The properties are:
mDBOverHardQuotaLimit (a.k.a prohibit send and receive)
mDBOverQuotaLimit (a.k.a prohibit send)
mDBStorageQuota (a.k.a issue warning)
---
Rich Matheisen
MCSE+I, Exchange MVP
From: Denis Cook on 15 Jun 2010 14:58
Thanks I have set the individuals mailbox limits, I hope it works.
questions: The GUI now shows the incorrect values! Do I leave it set to
default limit or select the custom tickboxes? Default I guess.
Do I have to change the default limit tio account for the larger individual
mailbox, if so where in ADSI do I find that (I am new to ADSI).
Ta,
Denis

"Rich Matheisen [MVP]" wrote:

> On Mon, 14 Jun 2010 16:50:17 -0700, Denis Cook
> <DenisCook(a)discussions.microsoft.com> wrote:
>
> >SBS2003 R2 running Exchange:
> >
> >I need to increase the size of a mailbox above 2G (I know there are admin
> >issues with >2G but needs must).
> >If I try and increase the mailbox size setting on the user account or
> >mailbox store properties etc I get a max 2G warning dialogue!
> >
> >Is this due to using cache'd mode?
> >
> >Is there any way round this 2G limit if not due to cache mode!?
>
> The limitation is in the UI (it uses a signed integer and as soon as
> you try to put a value larger than 2GB in there the high-order bit
> gets turned on and the value looks like it's a negative number), not
> the actual value that can be stored in the value.
>
> You can use ADSI (or LDP) and modify the value (in KB) in the AD
> directly.
>
> The properties are:
> mDBOverHardQuotaLimit (a.k.a prohibit send and receive)
> mDBOverQuotaLimit (a.k.a prohibit send)
> mDBStorageQuota (a.k.a issue warning)
> ---
> Rich Matheisen
> MCSE+I, Exchange MVP
> .
>
From: Rich Matheisen [MVP] on 15 Jun 2010 16:55
On Tue, 15 Jun 2010 11:58:38 -0700, Denis Cook
<DenisCook(a)discussions.microsoft.com> wrote:

>Thanks I have set the individuals mailbox limits, I hope it works.
>questions: The GUI now shows the incorrect values!

If the values you set in the AD properties are correct you can ignore
the values displayed in the UI because it will try to represent the
numbers as signed integer values.

>Do I leave it set to
>default limit or select the custom tickboxes? Default I guess.

No, if you're changing the quotas you can't leave the "mDBUseDefaults"
property set to TRUE and expect the quotas to be enforced.

>Do I have to change the default limit tio account for the larger individual
>mailbox, if so where in ADSI do I find that (I am new to ADSI).

The "default" quotas are those you set on the mailbox database. By
modifying the quotas on the individual mailbox AND setting the
mDBUseDefaults to FALSE you override the default settings.
---
Rich Matheisen
MCSE+I, Exchange MVP
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