Qnap TS-451+-8G 4 Bay Diskless NAS Intel Celeron Quad Core 2.0GHz CPU 8GB RAM

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The QNAP TS-451+-8G 4-Bay Diskless NAS (TS-451+-8G) is an all-purpose network-attached storage solution designed for professional and personal use.  The QNAP TS-451+-8G NAS features a 2.0GHz Intel Celeron quad-core processor, a 512MB flash memory, dual 4GB RAM modules pre-installed in two of its four system memory interfaces, and four hot-swappable drive trays compatible with 3.5"/2.5" HDDs and 2.5" SSDs.  Input/output ports include an HDMI port, two USB 3.0 ports, and two USB 2.0 ports.

Brand QNAP
File System Internal Hard Drive: EXT4
External Hard Drive: EXT3, EXT4, NTFS, FAT32, HFS+
Internal Hard Disks 4 x 2.5" or 3.5" SATA 6Gb/s, 3Gb/s HDD or SSD; hot swappable trays

1. The system is shipped without HDD.
For the HDD compatibility list, please visit https://www.qnap.com/compatibility
Dimensions 177 x 180 x 235 mm
6.97 x 7.09 x 9.25 inch
Power External Power Adapter, 90W, 100-240V
Networking ports 2x Gigabit RJ-45 Ethernet ports
eSATA Port No
CPU Quad-Core Intel® Celeron® 2.0GHz (burst up to 2.42GHz)
Storage Management QTS 4.2 (embedded Linux)

QNAP flexible Volume/LUN with thin provisioning and space reclaim
RAID 0,1, 5, 5 + hot spare, 6, 10
Supports storage pools*
Supports snapshots (4GB System RAM required)
-Supports Volume/LUN snapshot (Max 256 snapshots)
-Snapshot manager
-Snapshot clone
-Snapshot vault
-Snapshot replica
-Snapshot agent for Windows VSS and VMware
Online volume expansion
Online storage pool expansion
Online RAID capacity expansion and online RAID level migration
SMART data migration
Storage expansion via a QNAP UX-500P/UX-800P expansion unit
JBOD enclosure roaming
SSD read-only/read-write cache
Bad block scan and hard drive S.M.A.R.T.
Bad block recovery
RAID recovery
Bitmap support
LCD Screen No
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