Event logs before, during, after backup

I would like to know if these event logs on machines being backed up are normal.
They are event type Error, so they email us and needless to say for every machine we get a lot of nightly emails. We use a software package called EventSentry that combs event logs and sends them to us so we are alerted of potential server issues and even things like AD accounts getting locked out, created or modified. Here is an example for one of our servers in order from oldest to newest.

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The status for service vmvss (VMware Snapshot Provider) changed from Stopped to Running.

Additional Service Information:

Startup type: Manual
Executable: C:\Windows\system32\dllhost.exe /Processid:{F07E7037-86CF-446D-98B4-CED6DD865920}
Service account: LocalSystem

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A SCSI drive has been added:

Model: VMware Virtual disk SCSI Disk Device
DeviceID: \\.\PHYSICALDRIVE2
Serialnumber: 6000c29928d89f5d26b71aa3e36a7323
Size: 81917 Mb
Interface: SCSI
S.M.A.R.T. Status: OK
Firmware Revision: 1.0
Partitions: 1

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A SCSI drive has been added:

Model: VMware Virtual disk SCSI Disk Device
DeviceID: \\.\PHYSICALDRIVE3
Serialnumber: 6000c291e23c40018a585ab5a3e840a8
Size: 30718 Mb
Interface: SCSI
S.M.A.R.T. Status: OK
Firmware Revision: 1.0
Partitions: 1

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The status for service vds (Virtual Disk) changed from Stopped to Running.

Additional Service Information:

Startup type: Manual
Executable: C:\Windows\System32\vds.exe
Service account: LocalSystem

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MESSAGE The device 'VMware Virtual disk SCSI Disk Device' (SCSI\Disk&Ven_VMware&Prod_Virtual_disk\5&22be343f&0&000200) disappeared from the system without first being prepared for removal.
BINARY DATA 0000: 00 00 00 00

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MESSAGE The device 'VMware Virtual disk SCSI Disk Device' (SCSI\Disk&Ven_VMware&Prod_Virtual_disk\5&22be343f&0&000300) disappeared from the system without first being prepared for removal.
BINARY DATA 0000: 00 00 00 00

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MESSAGE The status for service vds (Virtual Disk) changed from Running to Stopped.

Additional Service Information:

Startup type: Manual
Executable: C:\Windows\System32\vds.exe
Service account: LocalSystem

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MESSAGE The status for service vmvss (VMware Snapshot Provider) changed from Running to Stopped.

Additional Service Information:

Startup type: Manual
Executable: C:\Windows\system32\dllhost.exe /Processid:{F07E7037-86CF-446D-98B4-CED6DD865920}
Service account: LocalSystem

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MESSAGE A SCSI drive has been removed:

Model: VMware Virtual disk SCSI Disk Device
DeviceID: \\.\PHYSICALDRIVE3
Serialnumber: 6000c291e23c40018a585ab5a3e840a8
Size: 30718 Mb
Interface: SCSI
S.M.A.R.T. Status: OK
Firmware Revision: 1.0
Partitions: 1

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MESSAGE A SCSI drive has been removed:

Model: VMware Virtual disk SCSI Disk Device
DeviceID: \\.\PHYSICALDRIVE2
Serialnumber: 6000c29928d89f5d26b71aa3e36a7323
Size: 81917 Mb
Interface: SCSI
S.M.A.R.T. Status: OK
Firmware Revision: 1.0
Partitions: 1