04-16-2022 09:53 PM
Solved! Go to Solution.
04-18-2022 03:58 PM
Hi @Tom_Qin
4TB cache should be okay.
You really should be able to answer what type of storage you have configured.
If (and I say if) the storage is MSDP-Cloud or Cloud Catalyst, each data segment is finger printed. This finger print is compared to a cache on the local media server and the media server will only send the data segment to the cloud if it is new. There should be no reason for any (significant) data reads from the cloud during a normal backup operation.
It might be worth while opening a support case to have this investigated further (maybe there is something misconfigured that is casuing the excessive reads from the cloud).
David
04-17-2022 01:01 AM
Hi @Tom_Qin
It doesn't sound normal, but there are many questions around the configuration of the media server which will affect what happens.
Cheers
David
04-17-2022 11:34 PM
Hi David,
We have 3 clients backup to cloud, the backup size showed in NBU console is around 3TB, 3TB, 4TB. Using MS-Windows backup. Master + Media Server with Local cache directory attached S3 storage from Alibaba cloud.
For the 3 questions,
I guess, if the cache can't find related block, will it download the data from cloud?
Thanks.
04-18-2022 03:58 PM
Hi @Tom_Qin
4TB cache should be okay.
You really should be able to answer what type of storage you have configured.
If (and I say if) the storage is MSDP-Cloud or Cloud Catalyst, each data segment is finger printed. This finger print is compared to a cache on the local media server and the media server will only send the data segment to the cloud if it is new. There should be no reason for any (significant) data reads from the cloud during a normal backup operation.
It might be worth while opening a support case to have this investigated further (maybe there is something misconfigured that is casuing the excessive reads from the cloud).
David
12-06-2022 05:41 PM
I got update from Veritas. When local cache is full, and if there's no reference in cache, it will get those block or data from cloud to cache. So it results lots of data downloaded from cloud.