Carlton1975
Cadet
- Joined
- Dec 15, 2014
- Messages
- 3
I've got a freenas (9.3) with 2x 100gb ZIL ssd's, 8*2tb sas disks and 1x 480GB l2arc cache. The freenas is providing iscsi storage for 3 servers. I've started thinking about backups and l2arc cache. The nas is still in testing mode, and not yet used in production.
We are using veeam to replicate our servers (mostly web and database servers) offsite, I assume, that when I'm creating backups with, the data which i'm sending over will be stored in the l2arc cache. (freenas just see's iscsi traffic going towards the esxi hosts, and does not know that the traffic is backup related).
To my mind the l2arc cache should hold the most important data such as website content and sql/mysql data. I understand the data that is inside the cache cannot be controlled as it works on a block level, it simply does not see the difference between a static file on a iscsi volume or a database.
Would it be possible to bypass the l2arc function for backup related tasks?
What do you guys think about this? Are there ways around it or will the l2arc cache always be used? ... Is it even worth thinking about?
We are using veeam to replicate our servers (mostly web and database servers) offsite, I assume, that when I'm creating backups with, the data which i'm sending over will be stored in the l2arc cache. (freenas just see's iscsi traffic going towards the esxi hosts, and does not know that the traffic is backup related).
To my mind the l2arc cache should hold the most important data such as website content and sql/mysql data. I understand the data that is inside the cache cannot be controlled as it works on a block level, it simply does not see the difference between a static file on a iscsi volume or a database.
Would it be possible to bypass the l2arc function for backup related tasks?
What do you guys think about this? Are there ways around it or will the l2arc cache always be used? ... Is it even worth thinking about?