When expanding data storage capacity, deploying multiple servers can lead to complexity in management and dramatically increased costs. QNAP TX-500P expansion enclosure provides a flexible expansion alternative designed with easy setup in mind for scaling up Thunderbolt NAS storage space via high-speed Thunderbolt 2 (20Gbps) cables. The TX-500P provides an additional 5 hard drives providing up to 40 TB* expanded capacity for the Thunderbolt NAS, making it ideal for data backup, 4K digital media collection and video surveillance storage with blazing-fast data transmission performance.
Easily add additional drive capacity to a Thunderbolt NAS
Simply connect the TX-500P to a Thunderbolt NAS via Thunderbolt 2 cables and power it on. The Thunderbolt NAS will automatically detect the hard drives in the TX-500P as newly-installed local drives. The Thunderbolt NAS capacity can then be seamlessly expanded as a large volume by using the powerful QTS Storage Manager.

Supported Thunderbolt NAS models and the maximum number of applicable expansion enclosures
| Supported Turbo NAS models |
TVS-1282T
TVS-871T |
TVS-882T |
TVS-682T |
| RAM of NAS |
>= 2GB |
>= 2GB |
>= 2GB |
| Maximum number of connected TX-500P |
6 |
6 |
6 |
| Maximum number of hard drives |
38 |
36 |
34 |
| Maximum raw capacity* |
304 TB |
288 TB |
272 TB |
| Maximum RAID group size |
144 TB |
144 TB |
144 TB |
| Maximum number of RAID groups per storage pool |
128 |
128 |
128 |
| Maximum storage pool size |
144 TB |
144 TB |
144 TB |
| Maximum number of storage pools per system |
128 |
128 |
128 |
| Maximum Flexible Volume size |
144 TB |
144 TB |
144 TB |
| Maximum iSCSI LUN size |
144 TB |
144 TB |
144 TB |
*The maximum capacity is calculated by using 8TB HDDs
Missing mode protection
If your TX-500P is accidentally disconnected, the Thunderbolt NAS enters missing mode and blocks I/O access to protect the stored data. The system can then recover from the missing mode to the normal state with data staying intact.

Powerful QTS Storage Manager
The QTS Storag Manager neatly presents tools and options for managing system storage with a modern & intuitive graphical user interface, which greatly simplifies the process of NAS capacity expansion and TX-500P management. IT administrators can easily monitor the health status of TX-500P and the disks within it. When multiple expansion enclosures are connected, the Locate Disk and Locate Enclosure functions assist you in quick maintenance.

Efficient backup solution for Thunderbolt NAS
In addition to expanding an existing volume, you can use the TX-500P as a flexible external storage to perform speedy and secure backup tasks for the Thunderbolt NAS. The QNAP RTRR (Real-Time Remote Replication) or rsync service lets IT administrators back up Thunderbolt NAS data to the TX-500P on a real time or scheduled basis.

Smart power design
The TX-500P automatically powers on and off with your Thunderbolt NAS, allowing for total convenience and energy saving.

Flexible drive selection
The TX-500P offers high flexibility in hard drive selection. IT administrators can choose low-cost but high-capacity SATA HDDs for large data archiving, or high-speed and high-stability SSDs for I/O intensive operations.
| Form Factor |
Tower |
| Hard Disk Drive |
5 x 3.5" or 2.5" SATA 6Gb/s, SATA 3Gb/s hard drive
NOTE:
1. The system is shipped without HDD.
2. For the HDD compatibility list, please visit https://www.qnap.com/compatibility |
| Hard Disk Tray |
5 x Hot-swappable tray |
| RAID Management |
Yes, (via QNAP QTS Storage Manager or software in Mac OS X) |
| Thunderbolt port |
Two Thunderbolt™ 2 high-speed ports (daisy-chain up to 6) |
| LED Indicator |
Status, fan error, system overheat, thunderbolt port status |
| Secure Design |
Kensington security slot for theft prevention |
| Fan |
Quiet cooling fan (12 cm, 12V DC) x 1 |
| Power Supply Unit |
Input: 100-240V AC, 50/60Hz, Output: 250W |
| Power Consumption |
HDD standby: 17.4W
In operation: 33.61W
(with 5 x 1TB WD10EFRX HDD installed) |
| Sound Level (dB)** |
Sound pressure (LpAm) (by stander positions): 21.4 dB
(with 5 x 1TB WD10EFRX HDD installed) |
| Dimension |
185.2 (H) x 210.6 (W) x 235.4 (D) mm
7.29 (H) x 8.29 (W) x 9.27 (D) inch |
| Weight |
Net: 5.1 kg (11.24 lbs)
Gross: 6.5 kg (14.33 lbs) |
| Temperature |
5°C ~ 35°C (40°F ~ 95°F) |
| Humidity |
5~95% RH non-condensing, wet bulb: 27ËšC. |

| 1. |
LED Indicators: Power, Link, Status |
4. |
Power Connector |
| 2. |
HDD LED Indicators |
5. |
Kensington Security Slot |
| 3. |
Enclosure ID |
6. |
Thunderbolt™ 2 ports x 2 |
* TX-500P does not include Thunderbolt™ 2 cable in the product package.
** Testing Environment:
Refer to ISO 7779 ; Maximum HDD loaded ; Bystander Position ; Average data from 1 meter in front of operating NAS