TS-853BU-4G - NAS QNAP - Free user manual and instructions
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| Product type | NAS – 8-bay 2U rackmount network storage |
| Brand | QNAP |
| Model | TS-853BU-4G |
| CPU | Intel Celeron J3455 quad-core 1.5 GHz (burst 2.3 GHz) |
| Memory | 4 GB DDR3L RAM (upgradeable to 8 GB) |
| Drive bays | 8 x 3.5" / 2.5" SATA 6Gb/s hot-swappable |
| RAID support | RAID 0, 1, 5, 6, 10 |
| LAN ports | 2 x Gigabit RJ45 |
| USB ports | 3 x USB 3.0, 2 x USB 2.0 |
| Expansion slot | 1 x PCIe Gen2 x2 |
| Form factor | 2U rackmount |
| Power supply | 250 W single PSU, 100-240 V AC |
| Dimensions (H x W x D) | 88.5 x 439 x 520 mm |
| Weight | 8.6 kg without drives |
| Cooling | 2 x 7 cm high-speed fans |
| Operating temperature | 0 to 40 °C |
| Maintenance | Dust filters for front and rear; fan and RAM are user-replaceable |
| Security | AES 256-bit NAS encryption, antivirus engine, permission controls |
| Repairability | Tool-free hot-swap drive trays; replaceable PSU, fan, RAM and battery |
Frequently Asked Questions - TS-853BU-4G QNAP
How to install hard drives in the TS-853BU-4G?
Open the front panel, remove the drive tray, install a 3.5" or 2.5" SATA drive, then lock the tray back into the chassis. Connect power and network cables, and power on the NAS. You can then configure drives in QTS Storage Manager.
How to set up RAID for the first time?
Access QTS via a web browser, open Storage Manager, click 'Create Storage Pool', choose a RAID type (e.g., RAID 5 or RAID 6), select the drives, and confirm. The NAS will automatically initiate the RAID building process.
How to access files remotely?
Enable CloudLink or set up a myQNAPcloud ID to connect via the internet. For secure remote access, use a VPN or QNAP's encrypted HTTPS connection.
How to replace a failed drive?
Identify the failed drive by an amber LED indicator. Remove the hot-swap tray, insert a new drive, and push it back in. Go to Storage Manager and click on the degraded volume, then select 'Rebuild' to restore RAID redundancy.
How to backup my data?
Use Hybrid Backup Sync to schedule local backups (USB, eSATA), remote backups (Rsync, Cloud Disk), or cloud storage (S3, Google, Dropbox). You can sync data across multiple platforms.
How to update firmware?
In QTS, go to Control Panel > Firmware Update. Check for available updates, download and install. It is recommended to backup system settings before updating.
How to perform factory reset?
Press the Reset button at the rear for 3 seconds to reset the admin password and network settings. Hold for 10 seconds to reset all settings to factory defaults and re-initialize the NAS.
How to create user accounts and set permissions?
Go to Control Panel > Users to create user accounts. Then assign privileges by editing folder properties and selecting which users or groups have read/write access. Shared folders can be configured with SMB, AFP, NFS, and FTP permissions.
How to expand storage capacity?
Add new drives to empty bays in Storage Manager and extend an existing storage pool. Alternatively, replace existing drives with larger ones one by one and wait for RAID rebuild to expand the capacity online.
How to ensure data security?
Use RAID with redundancy, enable Snapshots for rollback protection, activate AES encryption, and schedule regular backups with Hybrid Backup Sync. Also keep firmware updated and configure antivirus scans.
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