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MelD52
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[MERGED] Why is space required on the datastore to be backed

Post by MelD52 » Sep 19, 2017 6:22 pm

Hi,

The host to be backed up is Vmware ESXi 6.0 hosting 4 VMs: 2 Linux and 2 Windows.

I am trying to back up one Windows VM.

VEAAM is running on a physical Windows 7 Pro machine on the network. The backup drive NAS with 5.2TB free space which is visible as a Windows shared folder.

When I start the backup I get the error: "Skipping VM Processing due to insufficient free disk space on datastore datastore1."

We know that the space is low on that datastore. That is why we want to back it up - so we can safely re-configure the space.

It seems we are trapped. Why does Veeam need space available on the datastore to be backed up? Is there any way around this?

Thanks in advance for any help.

Mel

Vitaliy S.
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Re: Free space on datastore.

Post by Vitaliy S. » Sep 19, 2017 7:36 pm

Mel, please take a look at Dmitry's post on the previous page for the answer. Thanks!

HenokD
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[MERGED] Mandatory Free space size at Datastore of the sourc

Post by HenokD » Oct 11, 2017 11:13 am

Hi..
a Veeam novice here.. We subcontracted the Veeam Backup & Recovery portion of a project to another company.. Below are the details of the infrastructure and the current issue requiring guidance:

Using..
VMware vCenter Server v 5.5.0
Veeam Backup & Replication v 9.5.0.1038

DR site:
Only one host; Drive type: None-SSD; Capacity: 5.45TB; Free space: 4.81TB [already has 9 App VM replicas]

Data center site: 2 hosts; one for DB VMs, one for App VMs
For host-1, has 9 App VMs; disk backup, tape backup & replication all done... No issues there..
For host-2,
Physical server internal storage has eight 800GB SSD in Raid 1+0; Drive type: SSD; Capacity: 2.9TB; Free space: 1.52TB
Hosting 1 production SQL DB VM ; Provision space: 2.06TB; Used space:1.38TB

Plan: Backup & replicate the production SQL DB VM to DR
Issue reported by subcontractor: Free space available in repository of the host of the production SQL DB VM is not enough for the VM snapshot to be taken during the snapshot process including the space required for corresponding tasks for the replication process. He says if the replication job is started and if there is issue on the job process completion [i.e. during taking snapshot, creating backup, delta files, compression, data moving, decompress, write, commit vm snapshot, consolidation..], there is a chance that the source production SQl DB VM might fail...
He suggests that the DB size be optimized/reduced [as the actual DB size is much smaller... which requires support with another vendor supporting the DB]
OR he asks that source host datastore be increased by adding two 800GB SSDs.

Kindly help to understand if this is a correct assessment by the subcontractor.

HenokD
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Re: Mandatory Free space size at Datastore of the source hos

Post by HenokD » Oct 13, 2017 11:41 am

In short, if you have an SQL DB VM of size 1.38TB and if its host has free space of 1.52TB, will an application aware replication job for the SQL DB VM to another host's datastore complete successfully?
If not, will the attempt affect the condition of the source SQL DB VM?

foggy
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Re: Free space on datastore.

Post by foggy » Oct 13, 2017 3:24 pm

Henok, please review this thread for considerations regarding datastore space requirements. Thanks.

akli
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[MERGED] Insufficient free disk space on production datastor

Post by akli » Feb 13, 2018 1:02 am

Hello everyone
on vsphere Vmware I have a linux virtual machine with a 3TB disk in the data sotore. The disk is used at 50% of its capacity.
when I run the backup I get this error: Insufficient free disk space on production datastore
there is no snapshot in vsphere with this VM

Mike Resseler
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Re: Insufficient free disk space on production datastore

Post by Mike Resseler » Feb 13, 2018 6:56 am

Hi Akli,

First: Welcome to the forums!
When you take a backup, you will have a VMware snapshot. The VM disks are made read-only, and every virtual disk gets a delta file. All changes that occur during the backup are written to those delta files.
How much space is left at the datastore (Not the free space on the 3TB disk)?

Cheers
Mike

akli
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Re: Insufficient free disk space on production datastore

Post by akli » Feb 15, 2018 2:49 pm

Hi Mike
thank you for your quick reply
the free space in the LUN in the datastore is 185 GB.
the total LUN space is fully allocated for the VM disk

foggy
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Re: Free space on datastore.

Post by foggy » Feb 15, 2018 2:57 pm

Hi akli, please review considerations above in this thread for more information.

PierreFGDK
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Re: Free space on datastore.

Post by PierreFGDK » Feb 22, 2018 2:38 pm

Hello

We have two VMware 6 vSphere hosts with a vCenter with high availability.

We have two datastores
datastore1 with 2.2TB with 200GB free
datastore2 with 3.46TB with 299GB free

We've put the virtual servers C-drive on datastore1, and their datadisk on datastore2, as to guard against differences in growth.

In Veeam Backup & Replication we have:
Datastore warning percentage set to 6%
Datastore skip-job percentage set to 4%

We would like to ask for a "Feature Request", that we can get separate percentages for the two datastores as their usages are different. We don't have super growth rates or super high change rate during snapshot / backup.

Regards
Pierre

PTide
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Re: Free space on datastore.

Post by PTide » Feb 24, 2018 7:01 pm

Hi,

Please take a look at Veeam ONE, it has some userful datastore reports.

Thanks

PierreFGDK
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Re: Free space on datastore.

Post by PierreFGDK » Mar 08, 2018 1:17 pm

Hi PTide

I'm not looking for a report.
Please reread my request.

I wan't separate percentages for separate datastores, when a VM spans multiple datastores.

Best regards
Pierre

PierreFGDK
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Re: Free space on datastore.

Post by PierreFGDK » Mar 08, 2018 1:59 pm

Hi PTide

It's when the backup job is running, and fails as there is not enough free storage with the wrong percentage...

Best regards
Pierre

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