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Independent model diagnostic center

Synology DiskStation DS923+: test what you can before replacing anything.

Use DeviceOK to test the client/network side of a DS923+ problem and plan transfers, while DSM, storage pools, drives and RAID remain Synology diagnostic tasks.

Start with evidence

Relevant live checks

Browser Online Status TestCheck the browser online state, available connection hints, and a short round trip to DeviceOK.
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Browser Latency TestMeasure several browser-to-DeviceOK request round trips as a quick connection responsiveness check.
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Browser Network Timing Variation CheckRun repeated HTTP round trips to DeviceOK and show timing variation between samples.
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Data Transfer Time CalculatorEstimate ideal transfer time from data size and an entered link rate.
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Model-specific facts

Facts that change how you test it

  • Synology documents the DS923+ as a four-bay DiskStation NAS.
  • Synology's product manual lists two 1GbE RJ-45 LAN ports, two USB 3.2 Gen 1 ports and one eSATA port.

Connections: 2 × 1GbE RJ-45 · 2 × USB 3.2 Gen 1 · eSATA

Diagnostic focus

Problems this center is designed to narrow

  • DSM reachable from one client but not another
  • Transfer feels slow
  • NAS disappears from network
  • Client/network path vs drive/volume issue
  • Need official DSM/storage diagnostics