[cisco-voip] Unity Connection - Mailbox Stores

Wed Mar 23 14:31:59 EDT 2011

Awesome!  I am on 8.5(1)SU1, and will try multiple SFTP solutions.  Thanks
again for the replies.

The reason I would want to go above the 15GB threshold is simply to "use
what I paid for."  Well, not me, the client.

See, an MCS-7835-I3 is stated to hold 20-30 minutes of audio for up to 4,000
users, or 240,000 minutes.  Well, I don't have 4,000 users, just over 1,000
in fact, but I still want to use that 240,000 minutes, which would give me
200-240 minutes per user.

I wouldn't disagree with anyone if they said that logic was flawed.  ;)

Anthony

On Wed, Mar 23, 2011 at 8:41 AM, Pat Hayes <pat-cv at wcyv.com> wrote:

> To the original question of whether or not you can specify over the
> DRS recommended 15 gigs, yes, you can, but why would you want to? DRS
> being the only supported method of periodic backups, you are
> potentially putting your system at risk by going outside of that.
>
> For problems backing up the mailbox store, I think there are two main
> ones - first, the SFTP server you use needs to support file uploads
> that large. Check the archives for details on some known problem
> servers. You can verify easily enough by trying to manually upload a
> large file to your server, if it is going to fail it usually fails
> around 1 or 2 gigs. Second, defect CSCtf40892 can cause your backup to
> stall out and fail, usually around the 3 gig mark. Check the bug for
> full details, but essentially everything 7.x prior to 7.1(5b)su3 and
> 8.x prior to 8.5(1) is impacted. If you can get past those two issues,
> it should be smooth sailing :-)
>
> On Tue, Mar 22, 2011 at 7:49 PM, Bill Simon <bills at psu.edu> wrote:
> > All,
> >
> > We have a 10k user base and about 10GB mail store. Backups (DRS) seldom
> > worked on CUC 7.1. Just last weekend upgraded to 8.5 and backups are
> working
> > fine for this whole mail store. SFTP backups to a Linux server/OpenSSH.
> >
> > Backups and increased scalability were the reasons we moved to 8.5. If
> > you've got a large system, consider moving to this version.
> >
> >
> > On 3/22/11 7:19 PM, Erick B. wrote:
> >>
> >> Hmm... yea, on the 8.02 I have it always fails at just over a gig on
> >> both mailstores>  1 gig. The one mailstore we don't backup the
> >> messages in anymore however, just a lot of mailboxes for various
> >> sites.
> >>
> >> I've worked with TAC on this in past, and they didn't suggest using
> >> more mailstores to help with the backup issue. We had tried a dozen or
> >> so different SFTP servers and all failed at a gig most of time, so we
> >> ruled out SFTP server as problem. Any mailstore less then a gig backs
> >> up fine.
> >>
> >> I'll make some more mailstores to see what the limit is.
> >>
> >> Also, can't move the system mailboxes off the default mailstore.
> >>
> >>
> >> On Tue, Mar 22, 2011 at 5:49 PM, Jobe Gates<jobe at gates-tribe.com>
>  wrote:
> >>>
> >>> Mine was up to 6GB's so yes it should go over 1. I thought 5 was the
> >>> limit on 7.x. Not sure about 8.
> >>>
> >>>
> >>> Thanks,
> >>> Jobe
> >>>
> >>> On Mar 22, 2011, at 6:18 PM, "Erick B."<erickbee at gmail.com>  wrote:
> >>>
> >>>> I am having DRS fail at 1 gig, with mailstores over 1 gig in size.
> >>>> I've recently split a client into 5 mailstores now to get past the drs
> >>>> issue.
> >>>>
> >>>>
> >>>> this is with unity connection 8.02
> >>>>
> >>>> so drs should be able to do larger then 1 gig? on the ones it fails on
> >>>> the drs backup process sits at 40% for awhile then fails....
> >>>>
> >>>> Does anyone know if there is a limit to # of mailstores you can have?
> >>>>
> >>>>
> >>>> On Tue, Mar 22, 2011 at 3:54 PM, Jobe Gates<jobe at gates-tribe.com>
> >>>>  wrote:
> >>>>>
> >>>>> I've had DRS problems with large stores.  This was on 7.1 and there
> was
> >>>>> a known bug if you go over 10GB it would fail.
> >>>>>
> >>>>> Thanks,
> >>>>> Jobe
> >>>>>
> >>>>> On Mar 22, 2011, at 4:37 PM, Tanner Ezell<tanner.ezell at gmail.com>
> >>>>>  wrote:
> >>>>>
> >>>>>> Certainly,
> >>>>>>
> >>>>>> If you haven't already check out the design guide for CUC:
> >>>>>>
> >>>>>>
> >>>>>>
> http://www.cisco.com/en/US/docs/voice_ip_comm/connection/8x/design/guide/8xcucdgpdf.pdf
> >>>>>>
> >>>>>> Section 6 page 4 includes notes about scalability specifically the
> 2GB
> >>>>>> performance limitation I mentioned.
> >>>>>>
> >>>>>> Regarding mail box size, I cannot speak to that I'm afraid. I have
> not
> >>>>>> been in a deployment that used such a large mail box.
> >>>>>>
> >>>>>> Also, the CUC guide contains specific sections on scaling which will
> >>>>>> probably be on use to you.
> >>>>>>
> >>>>>> Tanner
> >>>>>>
> >>>>>> On Tue, Mar 22, 2011 at 1:29 PM, Anthony Holloway
> >>>>>> <avholloway+cisco-voip at gmail.com>  wrote:
> >>>>>>>
> >>>>>>> Thank you Tanner.  This is for a 1,200 user deployment on a pair of
> >>>>>>> MCS-7835-I3's, with 300GB HDD space, and 4GB of memory.
> >>>>>>> Do you have a source for the 2GB per mailbox comment, or is that
> >>>>>>> coming from
> >>>>>>> experience?
> >>>>>>> Also, can you comment on the 15GB per mailbox store, as it pertains
> >>>>>>> to DRS
> >>>>>>> backing up at a rate of 3GB/hr?
> >>>>>>> Anthony
> >>>>>>>
> >>>>>>> On Tue, Mar 22, 2011 at 3:05 PM, Tanner Ezell<
> tanner.ezell at gmail.com>
> >>>>>>> wrote:
> >>>>>>>>
> >>>>>>>> Mailbox sizes above 2GB are not recommend for performance reasons.
> I
> >>>>>>>> don't believe there is a hard limit on mailbox size.
> >>>>>>>>
> >>>>>>>> Depending on how many users you are supporting and the hardware
> >>>>>>>> running the platform will really determine the best course of
> >>>>>>>> action.
> >>>>>>>> Anything less than a 50-100 users I wouldn't worry about, beyond
> >>>>>>>> that
> >>>>>>>> you need to take performance into consideration.
> >>>>>>>>
> >>>>>>>> On Tue, Mar 22, 2011 at 10:03 AM, Anthony Holloway
> >>>>>>>> <avholloway+cisco-voip at gmail.com>  wrote:
> >>>>>>>>>
> >>>>>>>>> Unity Gurus,
> >>>>>>>>> I am reading up on the what's what with Mailbox Stores in CUC 8x,
> >>>>>>>>> and I
> >>>>>>>>> have
> >>>>>>>>> two questions:
> >>>>>>>>> 1. How closely should I stick to the 15GB per mailbox store for
> DRS
> >>>>>>>>> purposes?
> >>>>>>>>> 2. Ignoring DRS concerns, how large can a mailbox store be? All
> of
> >>>>>>>>> available
> >>>>>>>>> disk space?
> >>>>>>>>> In general, can you provide any real world considerations, tips,
> or
> >>>>>>>>> warnings
> >>>>>>>>> about going down this path?
> >>>>>>>>> Thanks.
> >
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> >
>
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