M365 backups to Isilon over SMB or S3 supported?

[Gujumax]

Is backing up to a Dell Isilon (Powerscale) over SMB or S3 a supported solution? If so, which is a better option, SMB or S3, for backing up M365 data?

[Mildur]

Hi Max

General recommendation is definitely S3. Much more stable and reliable protocol for Veeam Backup for Microsoft 365.
SMB only provides experimental support and comes with requirements: https://www.veeam.com/kb2971
With SMB, you will run the backup repository in jet databases on a SMB share. Unstable networks will lead to database corruption.

For Dell PowerScale and S3, please be aware of this limitation:
Unofficial object storage compatibility list - Veeam Backup for Microsoft 365

Dell PowerScale (OneFS 9.0.4 or later) (is general API compatible without immutability, but has a maximum number of objects limitation that will affect likely any customer)

While it's compatible and supported, I would reconsider the type of storage appliance for VB365. SMB only with experimental support and S3 limited to the maximum number of object limitation.

Best,
Fabian

[Gujumax]

Hey Fabian,

Sorry for the stupid question, but let's say I have 10 users who has 100,000 items in there mailbox, during backups using Veeam M365 to the Isilon S3 bucket, does that mean it has reached the 1million object limit OR it has nothing to do with that and 1 million objects (aka files and folders) Veeam backups creates can't reached 1million objects?

This is from Isilon technical guide about the S3 object limit.

"This affects only the number of direct children of a prefix, not the total number of object that can be stored within a root bucket."


For the maximum 1 million object limit – is the above statement referring to child folders and all recursive folders under the root bucket?


Root bucket (no limitation?)

|___child folder 1 (1 million limit?)

| |____sub-folder 1 (1 million limit?)

|___child folder 2 (1 million limit?)


Thanks.