Synology DiskStation DS1821+ 8-Bay NAS Enclosure

BH #SYDS1821P • MFR #DS1821+
Synology
Synology DiskStation DS1821+ 8-Bay NAS Enclosure
Key Features
  • 8 x 3.5" / 2.5" SATA Drive Bays
  • 2 x M.2 2280 NVMe SSD Slots
  • 2.2 GHz AMD Ryzen V1500B Quad-Core CPU
  • 4GB DDR4 ECC RAM
Expand the network storage capacity for your small- to medium-business or SOHO (Small Office, Home Office) environment with the DiskStation DS1821+ 8-Bay NAS Enclosure from Synology. Useful for high-speed file sharing, backups, and surveillance, this enclosure supports up to eight 3.5" and 2.5" SATA drives in RAID 0, 1, 5, 6, 10, Synology Hybrid, and JBOD modes for up to 110,000 4K random read IOPS and 2300 MB/s sequential write speeds to handle demanding workloads. Installing up to two M.2 NVMe PCIe solid-state cache drives into the available slots can boost hard drive array performance by over 20x. In addition to having four Gigabit Ethernet ports with Link Aggregation and Failover support, the PCIe 3.0 x8 slot allows you to install expansion cards such as 10GbE network adapters to further enhance performance. The DiskStation DS1821+ works with Windows 7 and macOS 10.12 or later systems, and its integrated Synology DSM operating system supports a host of applications for file management, security, and more.
In Stock
$999.99
$84/mo. suggested payments
with 12 Mos. Promo Financing* 
Protect your Gear
Add a protection plan from $69.99

True Know-How

Ask Our Experts

800.606.6969

Synology DS1821+ Overview

  • 1Description
  • 2High-Performance NAS
  • 3Cache Acceleration
  • 4Connectivity
  • 5Scalability
  • 6File Management and Sharing
  • 7Certified Storage Virtualization
  • 8Versatile Backup Solutions
  • 9Synology DSM Applications

Expand the network storage capacity for your small- to medium-business or SOHO (Small Office, Home Office) environment with the DiskStation DS1821+ 8-Bay NAS Enclosure from Synology. Useful for high-speed file sharing, backups, and surveillance, this enclosure supports up to eight 3.5" and 2.5" SATA drives in RAID 0, 1, 5, 6, 10, Synology Hybrid, and JBOD modes for up to 110,000 4K random read IOPS and 2300 MB/s sequential write speeds to handle demanding workloads. Installing up to two M.2 NVMe PCIe solid-state cache drives into the available slots can boost hard drive array performance by over 20x. In addition to having four Gigabit Ethernet ports with Link Aggregation and Failover support, the PCIe 3.0 x8 slot allows you to install expansion cards such as 10GbE network adapters to further enhance performance. The DiskStation DS1821+ works with Windows 7 and macOS 10.12 or later systems, and its integrated Synology DSM operating system supports a host of applications for file management, security, and more.

High-Performance NAS

The Synology DiskStation DS1821+ NAS enclosure is powered by a 2.2 GHz AMD Ryzen quad-core processor with 4GB of ECC DDR4 memory. It supports up to eight 3.5" and 2.5" SATA drives in RAID 0, 1, 5, 6, 10, Synology Hybrid, and JBOD modes with a maximum single volume size of 108TB.

Cache Acceleration

Installing up to two M.2 NVMe PCIe solid-state cache drives can accelerate hard drive array performance by over 20x.

Connectivity

The Synology DiskStation DS1821+ includes four Gigabit Ethernet ports with Link Aggregation and Failover support. Four USB 3.1 Gen 1 ports and two eSATA ports are available for connecting external storage drives and other devices to share across the network.

Scalability

A PCIe 3.0 slot is available for expansions such as 10GbE network adapters for high-speed data transfers and backups. Connecting up to two Synology DX517 5-bay expansion units to the DiskStation DS1821+ provides you with a total of 18 drive bays. Up to 32GB of memory can be installed across two SO-DIMM slots to further boost NAS performance and efficiency.

File Management and Sharing

The web-based File Station tool is built with intuitive, drag-and-drop operations for fast and secure file management from Windows and Mac computers. Advanced search and filtering tools allow for easy organization and file sharing, and the DS1821+ supports AFP, FTP, iSCSI, NFS, SMB, and WebDAV protocols.

Certified Storage Virtualization

Synology iSCSI storage supports most virtualization solutions to enhance work efficiency. Support includes VMware vSphere 6 and VAAI integration to help offload storage operations and optimize computation efficiency. Additionally, Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate and OpenStack Cinder support turns your Synology NAS into a block-based storage component.

Versatile Backup Solutions

The Synology DiskStation DS1821+ integrates a variety of backup applications to fit your needs, including Active Backup for Business, Hyper Backup, Synology Drive, and Active Backup for Microsoft 365 / G Suite.

Synology DSM Applications

  • The Synology Central Management System allows you to simultaneously manage multiple Synology NAS servers from a centralized interface.
  • Synology MailPlus provides a secure, reliable, and private mail server solution.
  • Quickly transition between clustered servers in the event of a server failure to minimize the impact on applications.
  • Comprehensive security tools are built-in and are continually updated to protect your devices against threats.
  • The Synology Drive application offers versatile tools for file management and synchronization.
  • With the Surveillance Station application, you have a complete solution for recording, monitoring, and management.
  • UPC: 846504003976

    Synology DS1821+ Specs

    Computing
    Total Installed Memory4 GB ECC DDR4
    User-Replaceable Memory1 x 4 GB
    Total Memory Slots2 x SO-DIMM
    Maximum Memory Capacity32 GB
    General
    Number of Bays8 x 2.5"/3.5"
    2 x M.2 (2280)
    Connections4 x RJ45 (Gigabit Ethernet)
    4 x USB Type-A (USB 3.1 / USB 3.2 Gen 1 (5 Gb/s))
    2 x eSATA
    Compatible Drive InterfaceSATA (Unspecified Version)
    Media Card SlotsNone
    Maximum Filled Capacity108 TB
    Form FactorDesktop
    RAID ModesRAID 0, 1, 10, 5, 6, JBOD, Synology Hybrid
    Hot-Swap SupportYes
    PCI Expansion1 x PCIe 3.0 x8
    Wake on LANYes
    Link Aggregation and Failover SupportYes
    Networking
    Supported ProtocolsCalDAV
    FTP
    HTTP
    HTTPS
    NFS
    SMB
    SMB 2.1
    SMB 3.0
    SNMP
    iSCSI LUN256
    iSCSI Target128
    Max Concurrent Connections550
    Max Folders512
    Max Sync Tasks80
    Max Groups256
    Max User Accounts2048
    Max Volume Number64
    Max Cameras Supported40
    Software
    Installed Operating SystemSynology
    Supported File SystemsInternal: BTRFS, EXT4
    External: BTRFS, EXT3, EXT4, FAT, HFS+, NTFS, exFAT
    OS CompatibilityWindows 7 or Later
    macOS 10.12 or Later
    Supported BrowsersChrome, Edge, Firefox, Internet Explorer, Safari
    Security
    EncryptionAES-NI
    Security FeaturesPassword Protection
    VPN Client Connections30
    Electrical
    AC Input Power100 to 240 VAC, 50 / 60 Hz
    Power SourceAC Adapter
    Power Consumption59.8 W (Typical)
    26.18 W (Idle)
    PSU Wattage1 x 250 W
    Environmental
    Operating Temperature32 to 104°F / 0 to 40°C
    Operating Humidity5 to 95%
    Storage Temperature-4 to 140°F / -20 to 60°C
    Physical
    Status MonitoringLED Indicator
    Audible AlarmYes
    Cooling2 x 120 mm Fans
    Noise Level22.2 dBA
    Built-In SpeakersNone
    IR SensorNone
    Dimensions13.5 x 6.5 x 9.6" / 343 x 166 x 243 mm
    Weight13.2 lb / 6.0 kg
    Packaging Info
    Package Weight18 lb
    Box Dimensions (LxWxH)18 x 14.6 x 12.3"
    See any errors on this page? Let us know

    YOUR RECENTLY VIEWED ITEMS

    Can this be expanded by adding drives with an ...

    Can this be expanded by adding drives with an active volume set up? Such as adding a 6th drive if you have 5 slots filled and already set up a running volume...
    Asked by: Vasha
    With 8 bays you just need to tell storage manager to expand the volume to include the new drives you install up to your 8 bays. You can even replace the existing drives with larger drives and maintain the same volume. Im doing that now. Going from 6Tb drives to 10TB drives in the same volume. Note: I cannot add extra drives because Im already using all 8 bays.
    Answered by: Karen
    Date published: 2021-08-23

    Is there any drive redundancy for if one hdd ...

    Is there any drive redundancy for if one hdd fails?
    Asked by: Alban
    The DiskStation NAS Enclosures supports RAID configurations 1, and 5, for one drive failure, and 6 that continue running with up to two drive failures.
    Answered by: Raymond B
    Date published: 2021-05-22

    If you had let's say 6TB per slot then want to ...

    If you had let's say 6TB per slot then want to increase space, can you just replace one slot at a time with larger space, like 10TB. Can you then rebuild the raid, then replace another slot, repeat, until all slots are 10TB each?
    Asked by: Watson
    Stephen's answer is correct. You can do exactly what you say, you just have to do it one disk at a time waiting until the array rebuilds each time. Note that this might take a LONG TIME, depending upon the amount of data on the array. Also, the performance of the array will be degraded somewhat during the rebuild. Usable, but lower performance. REMEMBER, you MUST set up your original array as either SHR1 or SHR2 (Synology Hybrid RAID) to be able to expand your array as you wish. If you use the standard RAIDs such as 5 or 6, the array will only use the portion of the drives of the size smallest drive in the array. AND, you cannot upgrade a drive later on. The entire array needs to be backed up, reconfigured with the new drives, then restored from the backup. BTW, I have an 1815+ with a 5 bay expander, and have been using them for over 5 years.
    Answered by: Richard
    Date published: 2021-08-23

    Does this have Hardware Encryption engine? Also ...

    Does this have Hardware Encryption engine? Also will the Plex will work comfortably when streaming?
    Asked by: Bagavathikan
    • y_2021, m_10, d_22, h_19CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.19
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_4
    • loc_en_US, sid_1609791, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
    • clientName_bhphotovideo

    Close

    Close

    Close