>> What are the Media Agent specifications?
We use 2-partitions DDB on 2 Media Agents: 2 DELL PowerEdge R740xd servers (256 GB RAM, 2 CPU Intel Xeon 5120 @ 2.20 GHz, Windows Server 2016) . Intel SSD NVMe P3700 is used to store the DDB on each server. For Disk Library use storage Dell MD1420 configured as RAID1+0.
>> What is the Q&I time shown for this DDB?
Average Q&I Time in last 3 days: 3814 ms (190%)
>> What is the application size for this DDB?
Total size of Application data=130 TB
>> What is the amount of Pending delete records for this DDB?
Number of Pending Delete Records = 0
>> There is a theoretical limit of 750,000,000 unique blocks for a DDB/partition.
>> Reaching this limit might suggest performance impact, but this is related to more than just the amount of unique blocks.
Now each partition use Total number of Unique Blocks ~ 470,000,000
Now each partition use Size of DDB Path ~ 142 GB
On the recommendation of the Commvault Support, i conducted a test using a IOMETER on Intel SSD P3700 which the DDB is located. The results are good - 40K Total I/Os per Second, Average I/O response Time (ms) = 0,12