Host-based backup of VMware vSphere VMs.
Post Reply
pkelly_sts
Veteran
Posts: 600
Liked: 66 times
Joined: Jun 13, 2013 10:08 am
Full Name: Paul Kelly
Contact:

Does first backup to Perf-based SOBR spread across repos?

Post by pkelly_sts »

If you create a new job, pointing to a new SOBR configured for performance (rather than locality) containing 2 equally sized extents, when the job first runs, will it spread the VMs across the two or will it start using one first, then only switch to the other after a given % usage?
foggy
Veeam Software
Posts: 21069
Liked: 2115 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: Does first backup to Perf-based SOBR spread across repos

Post by foggy »

It will place VMs so as to equally utilize the space on both extents.
pkelly_sts
Veteran
Posts: 600
Liked: 66 times
Joined: Jun 13, 2013 10:08 am
Full Name: Paul Kelly
Contact:

Re: Does first backup to Perf-based SOBR spread across repos

Post by pkelly_sts »

Great, I thought/hoped as much, thanks.
dellock6
Veeam Software
Posts: 6137
Liked: 1928 times
Joined: Jul 26, 2009 3:39 pm
Full Name: Luca Dell'Oca
Location: Varese, Italy
Contact:

Re: Does first backup to Perf-based SOBR spread across repos

Post by dellock6 »

This obviously if both the extents are both configured to accept full backups and incremental backups ( which is a bit against the design of the performance policy, but it works anyway as you described).
Luca Dell'Oca
Principal EMEA Cloud Architect @ Veeam Software

@dellock6
https://www.virtualtothecore.com/
vExpert 2011 -> 2022
Veeam VMCE #1
pkelly_sts
Veteran
Posts: 600
Liked: 66 times
Joined: Jun 13, 2013 10:08 am
Full Name: Paul Kelly
Contact:

Re: Does first backup to Perf-based SOBR spread across repos

Post by pkelly_sts »

Yes, I did think about that before trying it but my current testing is to make best use of available storage capacity, with a little bonus of having great throughput as well.

What will be interesting to see is the transform performance though as, thinking about it now, I'll still be in a situation where BOTH repositories are hit with simultaneous I/O which I guess is where the concept of performance would make the biggest difference.

However, I did do some testing to a SOBR with one repo for full and the other for incremental and didn't notice any real perforamnce difference (for transforms) compared to just sending everything to a single repo. However, that was with a single big backup file configured whereas for this test I've enabled per-vm backups.

Would you expect much difference in performance to a single full/incr pair of repos if switched to per-vm?
foggy
Veeam Software
Posts: 21069
Liked: 2115 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: Does first backup to Perf-based SOBR spread across repos

Post by foggy »

Depends on the storage, whether it benefits from multiple writing streams or not. Some effect may also come from less fragmented backup files.
pkelly_sts
Veteran
Posts: 600
Liked: 66 times
Joined: Jun 13, 2013 10:08 am
Full Name: Paul Kelly
Contact:

Re: Does first backup to Perf-based SOBR spread across repos

Post by pkelly_sts »

Understood. I'll set it to a short enough retention to force it to do a transform over the weekend & see how the performance is.
Post Reply

Who is online

Users browsing this forum: Amazon [Bot], kratos, Semrush [Bot] and 94 guests