Optimizing Backup Performance

[Tatsuya]

I am evaluating the performance of the initial (full) backup with the following configuration.
However, the backup still takes a long time.
[Questions]
Q1: Even with a Backup Application configured, will the performance be at the level expected in the "Test Results"?

Q2: My OneDrive Proxy Pool consists of 5 Proxy servers.
However, based on Amazon CloudWatch metrics, it shows that only 2~3 proxies are actively being utilized.
How can I ensure that all(5) proxies configured in the Proxy Pool are effectively used?

Q3: I am considering deploying VB365 for an environment with approximately 15,000 employees.
I do not yet have the exact data volume and the expected daily data growth rate.
However, the current performance in my test environment, the initial backup will take a very long time.
Besides configuring additional Backup Applications or improving Proxy Pool utilization, are there any other methods to significantly increase the backup speed?

[Configuration]
- VB365 version: 8.2.0.2008 P20251007
- EC2 Instance Type for VB365 Server/Proxy: c5.2xlarge(vCPUs:8, Memory:16GiB)
- VB365 Server/Proxy OS: Windows Server 2022
- Repository: Amazon S3
- Proxy Pools:
- Dedicated for Exchange Proxy Pool: 2 proxies
- Dedicated for OneDrive Proxy Pool: 5 proxies
- Dedicated for SharePoint Proxy Pools: 2 proxies
- M365 User Count: 25 Users
- Data Size:
- Exchange: 1.8GB
- OneDrive: 1TB
- SharePoint: 1.1TB
- Number of Backup Jobs (run in parallel):
- Exchange Job: 1
- OneDrive Job: 10
- SharePoint Job: 1
Number of Backup Application: 1
# Note: I am currently evaluating only the initial full backup.

[Architecture Overview]
+------------------+ +-----------------+ +-------------------+
AWS S3(Buckets) |Exchange Repo| |OneDrive Repo| |SharePoint Repo|
+------------------+ +-----------------+ +-------------------+
| | |
+-----------------+ +------+ +------+ +------+
AWS EC2 | VB365 Server | |Proxy| ×2 |Proxy| ×5 |Proxy| ×2
+-----------------+ +------+ +------+ +------+
| | | |
+----------------------+ | | |
|Exchange Job ×1 | +------------------------+ +-----------------------+ +-------------------------+
(VB365) |OneDrive Job ×10 | |Exchange ProxyPool| |OneDrive ProxyPool| |SharePoint ProxyPool|
|SharePoint Job ×1| +------------------------+ +-----------------------+ +-------------------------+
+----------------------+
↓Read ↑Write
==================================================================================
+--------------------------------------------------+
| Organization |
| +--------------------------------------------+ |
| | Backup Application | |
| +--------------------------------------------+ |
| |
| User-1 ... User-25 |
M365 | +------------+ +------------+ |
| |Exchange| |Exchange| |
| +------------+ +------------+ |
| +-----------+ +-----------+ |
| |OneDrive| |OneDrive| |
| +-----------+ +-----------+ |
| +--------------+ +-------------+ |
| |SharePoint | |SharePoint| |
| +--------------+ +-------------+ |
+--------------------------------------------------+

[Test Results]
Bottleneck Job Processing Read Write Duration Objects Transferred
Source Outlook 10.9MB/s 13.4MB/s 35.8MB/s 2:46 62 1.8GB
Source OneDrive-1 7.0MB/s 24.4MB/s 53.2MB/s 3:20:50 2 82.1GB
Source OneDrive-2 7.0MB/s 26.3MB/s 69.7MB/s 3:20:38 2 82.1GB
Source OneDrive-3 7.0MB/s 20.5MB/s 53.2MB/s 3:21:01 2 82.1GB
Source OneDrive-4 7.4MB/s 262.2MB/s 60.9MB/s 3:10:14 2 82.1GB
Source OneDrive-5 7.2MB/s 32.4MB/s 69.7MB/s 3:13:44 2 82.1GB
Source OneDrive-6 10.5MB/s 26.4MB/s 63.0MB/s 3:20:28 3 123.1GB
Source OneDrive-7 11.2MB/s 28.1MB/s 61.0MB/s 3:07:41 3 123.1GB
Source OneDrive-8 11.5MB/s 29.1MB/s 73.2MB/s 3:03:09 3 123.1GB
Source OneDrive-9 11.1MB/s 26.3MB/s 63.0MB/s 3:08:47 3 123.1GB
Source OneDrive-10 11.2MB/s 28.6MB/s 63.1MB/s 3:07:41 3 123.1GB
Source SharePoint 74.4MB/s 62.3MB/s 134.0MB/s 4:17:23 63 1.1TB