Backblaze B2 vs Synology DiskStation DS923+

By Billy G. · Founder & Lead EditorVerified Jun 7 by Billy G.

Backblaze B2
Backblaze B2
Synology DiskStation DS923+

Verdict: Backblaze B2 and Synology DiskStation DS923+ serve fundamentally different purposes with no direct overlap in use case. B2 provides offsite object storage billed per GB with S3 API access while the DS923+ is a 4-bay local NAS running DSM released October 2022. Users needing both local speed and offsite protection typically combine the two rather than choose one.

Winner: Backblaze B2

Backblaze B2: 7.5/10

Synology DiskStation DS923+: 7/10

Spec-by-spec comparison

Backblaze B2Synology DiskStation DS923+
Storage TypeObject storageLocal RAID NAS
Capacity OptionsUnlimitedUp to 64 TB with 4 bays
Access MethodAPI and web dashboardNetwork shares and apps
Cost StructurePay-per-GB monthlyOne-time hardware purchase

Backblaze B2

What works

  • 99.9% uptime SLA with geo-redundancy
  • Integrates with many backup tools via S3-compatible API

What doesn't

  • Ongoing recurring costs for large volumes
  • Dependent on internet bandwidth for restores

Synology DiskStation DS923+

What works

  • High-speed local file access over LAN
  • Runs Synology DSM with extensive app ecosystem
  • Hardware encryption and snapshot support

What doesn't

  • Requires separate drive purchases and maintenance
  • No built-in offsite redundancy without additional setup

Bottom line

Our pick: Backblaze B2.

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