Installation Guide
Table Of Contents
- Introduction
- Planning Acronis Storage Infrastructure
- Understanding Acronis Storage Architecture
- Planning Node Hardware Configurations
- Planning Network
- Understanding Data Redundancy
- Understanding Failure Domains
- Understanding Storage Tiers
- Installing Acronis Storage
2.2. Planning Node Hardware Configurations
2.2.5.6 HDD + SSD, 3 Tiers
In this configuration example, tier 1 is for HDDs without cache, tier 2 is for HDDs with cache, and tier 3 is for
SSDs. Tier 1 can store cold data (e.g., backups), tier 2 can store regular virtual machines, and tier 3 can store
high-performance virtual machines.
Nodes 1-5 (base)
Disk No. Disk Type Disk Role(s) Tier
1 HDD/SSD System
2 SSD MDS, T2 cache
3 HDD CS 1
4 HDD CS 2
5 SSD CS 3
...
N HDD/SSD CS 1/2/3
Nodes 6+ (extension)
Disk No. Disk Type Disk Role(s) Tier
1 HDD/SSD System
2 SSD T2 cache
3 HDD CS 1
4 HDD CS 2
5 SSD CS 3
...
N HDD/SSD CS 1/2/3
2.2.6 Raw Disk Space Considerations
When planning the Acronis Storage infrastructure, keep in mind the following to avoid confusion:
• The capacity of HDD and SSD is measured and specified with decimal, not binary prefixes, so “TB” in disk
specifications usually means “terabyte”. The operating system, however, displays drive capacity using
binary prefixes meaning that “TB” is “tebibyte” which is a noticeably larger number. As a result, disks may
show capacity smaller than the one marketed by the vendor. For example, a disk with 6TB in specifica-
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