Data Backup and Recovery Discussions

Sizing a large sharepoint environment

mirko

Hi,

I'm currently creating a design for a very large sharepoint environment.

There seems to be very little documentation for large designs.

I know already this :

  • system db's - data + logs : separate lun | separate volume (lun 1 | vol 1)
  • temp db's : separate luns for each tempdb | luns can share same volume (lun 2,3 | vol 2)
  • Non-content db's - data : separate lun | separate volume (lun 4 | vol 3)
  • Non-content db's - logs : separate lun | separate volume (lun 5 | vol 4)

But for the content db's, it becomes more complicated :

The limit is 200GB, including blobs (regardless if they are remote or local)

Assume were are using Remote Blobs (RBS)

Assume the metadata/blob ratio = 20% / 80%

=> content db's can only be 40GB (with 160GB blobs)

Assume I have to size a 20TB sharepoint , I would have 4TB databases and 16TB blobs.

The 4 TB databases would be split up in 100 x 40GB content databases. (lun 6 - lun 105 | vol 5 - vol 104)

Asume 25% logs => 100 x 10GB logs (lun 106 - 205 | vol 105 - vol 204)

If I put each 40GB content database in its own lun within its own volume and I do the same for the logs, I would create 200 volumes.

If I was to have this environment in acceptance & in production, this is 400 volumes, coming very close to the 500 volume limit.

What would be the recommendation ?  place multiple luns in 1 volume ?  Or place multiple db's in 1 lun ? 

What about the 16TB cifs share for the blobs ?  Will this become a large file count issue ?

Thanks for any help.

Mirko

1 REPLY 1

Re: Sizing a large sharepoint environment

mirko

Hi,

I will answer my own question, for future readers :

Don't put multiple large databases in one lun => restore will be a streamed copy restore

It's no problem to put multiple lun in one volume => as long as they have the same snapshot and snapvault schedule.

Fast lun restore is still possible using the lun clone split method.

So for my design : I'll put all content database luns from 1 farm in one volume, as they have the same backup schedule.

I'll do the same for the log files.

Earn Rewards for Your Review!
GPI Review Banner
All Community Forums
Public