Synology DS923+ Driver Bug History & Rollback Guide

Released: 10/2023 | Launch Price: $749 | Category: Network / NAS

Quick Specs

| Feature | Details | |---------|---------| | Brand | Synology | | Model | DS923+ | | Release Date | 10/2023 | | Launch Price | $749 | | Consumables | 3.5" SATA HDD | | Supported Platforms | Windows 10/11, macOS 12+, DSM 7.2 | | Category | NAS |

Known bugs and issues

Slow SMB file transfer

Solution: Enable SMB Multichannel and jumbo frames:

1. In DSM/QTS, enable SMB3 with Multichannel
2. Set MTU to 9014 (jumbo frames) on both NAS and client
3. Use Cat6a or better Ethernet cables
4. Disable any software firewall that may throttle traffic

Drive failure and RAID rebuild

Solution: Use SHR (Synology) or RAID 1 for 2-bay, RAID 5 for 4+ bays. When a drive fails:

1. The NAS will alert you via email/mobile notification
2. Replace the failed drive with the same model or larger
3. The rebuild process starts automatically (can take 24–48 hours)
4. Do not power off during rebuild

Plex transcoding issues

Solution: Enable hardware acceleration (Intel Quick Sync or AMD VCE) in Plex settings. Ensure the NAS has enough RAM (8GB+ recommended). For 4K HDR transcoding, a NAS with an Intel J4125 or better CPU is recommended.

Step-by-step fix procedures

Fix slow SMB

1. Enable SMB3 with Multichannel in NAS settings
2. Set jumbo frames (MTU 9014) on NAS and client
3. Use Cat6a+ Ethernet cables
4. Disable software firewalls that may throttle
5. Update NAS firmware to latest version

Fix Plex transcoding

1. Enable hardware acceleration in Plex settings
2. Ensure Intel Quick Sync / AMD VCE is active in NAS BIOS
3. Add more RAM if below 8GB
4. Use H.264 instead of H.265 for lower CPU usage
5. For 4K, consider a dedicated GPU

Optimization and tuning

Performance optimization

• Enable SMB Multichannel for faster file transfer
• Use SSD cache for frequently accessed data
• Set up scheduled snapshots for data protection
• Enable Docker for self-hosted services

Security optimization

• Change default admin password
• Enable WPA3 or WPA2/WPA3-mixed encryption
• Disable remote management if not needed
• Enable auto-update for firmware
• Create a separate guest Wi-Fi network

Real-world user experience (2026 updates)

What users love about the DS923+

• Synology reliability and build quality
• Excellent value for the $749 price point
• Windows 10/11 and macOS 12+ setup is straightforward
• 3.5" SATA HDD keeps running costs manageable

Common complaints

• Initial setup can be complex for non-technical users
• Drive cost is a significant investment

Tips from long-term users

1. Keep the original packaging and receipt for warranty claims
2. Register the product on Synology's official website for extended support
3. Download the full user manual (PDF) for offline reference
4. Join Synology user forums for tips and firmware updates
5. Set a reminder for maintenance tasks (cleaning, firmware updates)

Common handling and maintenance

Initial setup checklist

1. Unpack the device and remove all protective materials
2. Place on a stable, level surface with adequate ventilation
3. Connect power supply and any necessary cables
4. Follow the quick-start guide for initial configuration
5. Register the product and check for firmware updates
6. Run a test operation to verify basic functionality

Daily / weekly care

• Keep firmware updated to latest stable version
• Check for overheating indicators (unusual fan noise, hot enclosure)
• Monitor network performance for degradation

Troubleshooting flow

When issues occur:

1. Identify the specific symptom (error code, behavior change)
2. Check the last change (firmware update, OS update, new cable)
3. Try a power cycle (unplug 30 seconds, reconnect)
4. Check for firmware updates
5. If unresolved, search for the exact error code + DS923+ + Synology
6. Contact Synology support with your serial number and purchase date

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Last updated: 2026. This guide covers the Synology DS923+ across all major hardware categories. Always verify the latest firmware and driver versions on the Synology official website before applying any fix or optimization procedure.