Hello,
In one location i have two MAs(media agents) with local storage, each MA has:
1. SSD storage for DDB (two disks in RAID1 array), single logical disk
2. HDD storage for library (multiple disks in RAID6 array), single logical disk
So, I have two options:
A. Create two Deduplication storage pools, one per server and manage how agents are spread between those pools manually. With this approach I'm familiar on practice, it is not very convenient to mage such setup. But i clearly understand how jobs and clients are spread between MAs and what happens if one of servers will fail.
B. Create one big Storage pool with both MAs in grid, library paths will be shared between MAs using DataServerIP transport in read mode, pool will have common DDB with two partitions(one per MA). I'm not familiar with such setup and don't know potential downsides.
So, questions regarding option (B):
1. How agents and jobs are spread between MAs? How Commvault makes decision which local storage path to use, on MA1 or MA2? How it decides which DDB partition to use for particular agent or job?
2. What happens if one of MAs not available for short time? Is Restore possible for at least part of agents? Will backup jobs continue to work?
3. What happens if one of MAs is completely lost or not available long time?
And general question, which option A or B is recommended by Commvault?
Thank you in advance!
Question
Two MAs with local storage, single or two storage pools?

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