Veeam ONE intermittent alarm "VM total disk latency"

[yoonsak]

VM backup server
* win2012r2 install veeam b&r and veeam one
* don't have cpu process
* VM on dedicate local datastore (raid5)
I found Veeam ONE intermittent alarm "VM total disk latency" like

Code: Select all

19/09/2560 00:42:29 "Datastore Highest Latency" (54.0 Milliseconds) is above a defined threshold (50.0 Milliseconds)
19/09/2560 07:55:53 "Datastore Highest Latency" (312.0 Milliseconds) is above a defined threshold (75.0 Milliseconds)
19/09/2560 08:17:01 "Datastore Highest Latency" (68.0 Milliseconds) is above a defined threshold (50.0 Milliseconds)
19/09/2560 08:17:21 "Datastore Highest Latency" (101.0 Milliseconds) is above a defined threshold (75.0 Milliseconds)
19/09/2560 08:24:03 "Datastore Highest Latency" (74.0 Milliseconds) is above a defined threshold (50.0 Milliseconds)
...
21/09/2560 14:11:59 "Datastore Highest Latency" (473.0 Milliseconds) is above a defined threshold (75.0 Milliseconds)
21/09/2560 15:15:00 "Datastore Highest Latency" (385.0 Milliseconds) is above a defined threshold (75.0 Milliseconds)
21/09/2560 16:31:46 "Datastore Highest Latency" (301.0 Milliseconds) is above a defined threshold (75.0 Milliseconds)

I try to explore any monitor
* Veeam ONE VM's datastore counter, virutual disk counter
* VC VM's datastore read/write latency
* ESXi VM's disk lantency
but not found high read/write latency.

What is the source of "Datastore Highest Latency" counter ? Why Veeam ONE intermittent alarm "VM total disk latency"?

Environment: Veeam ONE 9.5.0.3254, ESXi 6.5u1 build 5969303, VC 6.5.0.10000

[Shestakov]

Hello and welcome to the community!
Could you check if the alarm is predefined or custom (created by user)? It should be written in alarm management tab. When you open the alarm for edit, "Rules" tab shows the performance metric used for the alarm.
"Datastore read latency" and "Datastore write latency" alarms use corresponding Disk/Datastore: Datastore Read Latency and Disk/Datastore: Datastore Write Latency metrics.
Thanks!

[Andi G.]

Hello,
i have the same alarm messages after Upgrade our Vmware environment to 6.5 (From VCenter Windows to VCenter Appliance) . Its a predefined alarm "Vm total disk latency".
But i cant see any such values in any performance table/charts

[Shestakov]

Hello Andi and welcome to the community!
That`s possible if you observe historical performance values. The intervals are aggregated from shorter values which could trigger the alarm.
Please review this topic. Does your case look similar?
Thanks!