Both of them are great NAS brands – the top in the NAS category . This question is like which is better- iOS or android. Typically QNAP offers more hardware choices and hardware tweaking options. Synology on the other hand has more stable and easier software UI. The one you should go for , greatly depends on the actual requirement you have.
What is Synology DSM
DSM (Diskstation manager) is the name Synology has given to its operating system. Each NAS is like a little PC with its own CPU, RAM and OS.
What is Synology Active Backup
Synology Active backup for business is a backup application that allows you to backup your servers, virtual machines and desktops. It allows you to restore on a file level or bare metal recovery
Synolgy Why Should I upgrade RAM
If you have RAM intensive processing running on your NAS, it helps to upgrade. Look at your system status and see the RAM usage. If its peaking, a RAM upgrade will help. If the current memory usage is above 90% for example, you can improve performance by adding RAM. If you run VM or Docker, then you would definitely need more RAM
Synolgy Why should I have multiple volumes
Typically you would want a single large volume with multiple folders inside. However in some cases you may want to make multiple volumes like when you mix media ( SSD fast volume and HDD slow volume), or you want different raid levels ( RAID 6 volumes for important data, RAID 5 volume for second backup) or if the upper size limit of the volume is reached and you can’t expand it any further.
How does Synology SHR work
Synology SHR allows you to mix different sized drives without wasting space. SHR1 is equivalent of RAID 5 and SHR2 is equivalent of RAID6. At the most basic – it creates multiple partitions on the drives each equal to the lowest size drive and then applying a RAID treating each partition as an individual drive.
synology how many drives can fit
Depending on the unit there can be 2 to 24 drives. Look at your model specification sheet to see the number of 2.5”/3.5” SATA bays. Some models can be expanded too
synology how many virtual machines can be run
Virtual Machines can only be run on models support VMM. Number of Vms that you can run depend on the VM workload , typically Number of CPU threads, and the memory requirement are 2 important variables to keep in mind while calculating the max number of Vms your machine can support. There is no single formula to calculate but the Free CPU power and Ram, Divided by the CPU power and ram of each VM gives you a fair idea
synology how many users can be accomodated
DSM allows 2048 to 16,000 users depending on the model to be created. However the actual number of concurrent users who can work comfortably depends on the hardware. For example 220j allows 2048 user accounts, but not more than 6 users can connect without a performance degrade
how many volumes on synology can be setup
Synology allows 64-256 volumes ( varies by models) to be setup but you would typically be setting up 1 or 2 volumes and multiple folders inside, say an SSD volume and an HDD volume. Most of the time you are looking at minimizing the number of volumes you create.
which synology nas for plex
Plus series ( DS-220+, 720+ and 920+) works well for Plex. This series does the Hardware transcoding too. Refer to Plex NAS compatibility List for more information
How to buy synology surveillance station license
Licenses are issued as paper licenses with a serial key. Use the serial key to register the license on Surveillance station. We sell surveillance station license also online.
how Does synology NAS work
All the Major NAS work the same way. At the very basic – you connect them to a network, define basic permissions and settings and then anyone on your network ( or outside the network if you configured cloud) can access it on PCs and mobile devices. Contact us if you want to see a demo
synology how often data scrubbing is performed
Data Scrubbing takes place according to the schedule you set
how many camera licenses are free with Synology
With Synology 2 Camera Licenses are free. Others can be bought in a pack of 1, 4 or 8
who makes synology hard drives
Synology Hard drives are manufactured by Toshiba, they are Toshiba MG enterprise drives. However they have a specific firmware which enable a deeper integration with Synology DSM
synology where is dsm installed
DSM is installed on the hard drives/ssd. First time you power on the unit ( or power on an existing unit without Hard drives), it prompts you to install the DSM. On the higher units, there might be DOM (Disk on Module) but you need the DSM on hard drive/SSD to boot the unit
synology what is data scrubbing
Data you store on the hard drives is subject to silent corruption ( called Bit rot). With Data Scrubbing, your data is checked periodically to ensure that there is no bit rot and data is accurate. If an inaccuracy is found, Synology DSM will attempt to repair the data using the redundant copy. So with Data Scrubbing the chances of your data Silently getting corrupt is minimized.
synology how to replace failing drive
Drives are hot swappable which means you don’t have shut down the unit. If you are on RAID 5 or SHR1, then you only have 1 HDD failure tolerance, and its advisable to not use the NAS while the RAID is being rebuilt. Replacing hard drive is as easy as pulling the bay housing the failing/failed drive, and replacing with a new drive.
which synology nas should i buy
If you are an End user and on a budget go with j series – 220j or 420j. If you are power user go with Plus series ( DS-220+, DS-720+ or DS-920+). If you are a business user, contact us and we will suggest a model that suits your need depending on the number of users and features you need
I have been looking where to buy Synology and found you. Are you a distributor of Synology
DataCare LLC is a Subdistributor and Service partner of Synology for UAE. In the last 10 years, we have become the largest Synology partner and SI providing storage solutions for UAE. You can check our credentials and partnership status on Synology website.
DataCare a Synology Distributor for UAE ?
We are a Sub-Distributor and Service partner for UAE. Please check on Synology Website for authentic partnership status , off late there have been many shady businesses "Claiming" to be the distributors of Synology just to rank in the search engines.
Synology Largest Subdistributor and Service partner in UAE
DataCare LLC is the largest Synology subdistributor since 2008 and we are also the service partner since 2020. We have expertise in designing and commissioning Synology solutions. We integrate drives from Synology, WD, Seagate and Toshiba into Synology solutions. Every Synology device you buy from us with hard drives will be pre-configured by us for free. We also offer extended warranty for new Synology devices, extended warranty for existing Synology devices, and next-business-day replacement of Synology for an additional charge.
We also repair and sell Synology spare parts, as we are a Synology service partner. Our technicians are trained by Synology and we also organise workshops and technical trainings for Synology.
Stock availability of Synology Synology DiskStation DS1821+
We have a large inventory (probably one of the largest in the Middle East) of Synology as we are a sub-distributor. If the stock is not available, we can give you a firm delivery date.
Price Matching and Lowest Bulk Price for Synology Synology DiskStation DS1821+
The price listed on the website is the retail price intended for end users, but If you are an end user looking for a better price you can either email us or use the "Match My Price" service. Resellers can request for a special reseller price.
Free Shipping for Synology Synology DiskStation DS1821+ in UAE
We Ship Synology Synology DiskStation DS1821+ to Dubai, Abu Dhabi and Rest of the UAE free of cost. We have Export freight rates for this product also to Middle East including Saudi Arabia, Kuwait, Qatar, Bahrain and Oman. For African countries, our organized carriers tend to be expensive and we ask that you arrange shipping yourself. VAT Exceptions for export orders from the UAE are available if shipped from Jebel Ali or if your carrier issues proper export documentation
Plus Series 8-bay NAS for Offices and IT Pros
Diskless 0 TB
Supports RAID SHR, 0,1,5,6,10
Synology DiskStation DS1821+
High capacity storage and data protection for anyone
Designed for scalability and performance
The 8-bay Synology DS1821+ is aimed at IT enthusiast and SMB customers looking for a powerful and scalable storage solution, its business-grade backup solutions keep users safe and protected from potential data loss, while major improvements to compute capabilities and throughput means workloads are finished faster than ever before.
AMD Ryzen™ Quad-core 2.2 GHz
Dual M.2 2280 slots for NVMe Cache
113K 4K random read IOPS
Expand up to 18 drives with two DX517 expansion units
A powerhouse on all fronts
The DS1821+ can handle demanding application workloads and a greater number of concurrent users. Experience faster file indexing in Synology Drive, photo organization in Moments, and more responsive web services.1
Turbocharge and supersize it
networking or for higher storage capacity.
2 x M.2 NVMe
Enable ultra-fast NVMe cache to accelerate HDD arrays by 20X or more
Add in faster SFP+ or RJ-45 networking to turbocharge existing workflows
Supports two DX517 expansion units for a total of 18 bays
HDD/SSDs, 10GbE network adapter cards, and expansion units are sold separately.
Ultimate file management and sharing
File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, DS1621+ supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.
Fully certified storage virtualization solutions
Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.
Ultimate Backup Solution
DS1821+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.
Active Backup for Business : Centralize backup tasks for VMware, Windows, and file servers. Restore whatever you want fast and reliably when needed.
Hyper Backup : Comprehensively back up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud to ensure data safety.
Synology Drive : Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.
Microsoft 365 / G Suite : On-premise backup solution with a centralized dashboard. Optimize storage efficiency with single instancing and block-level deduplication technology.
Engineered for reliability, backed by Synology
DS1821+ is designed to reliably store your data and is backed by Synology's three-year hardware warranty.
Powered by Synology DSM
Central Management System
Manage multiple Synology NAS servers simultaneously on a centralized interface to increase business efficiency.
Secure, reliable, and private mail server solution with an intuitive and modern mail client.
Synology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.
A versatile solution for file management and synchronization.
Complete surveillance solution for recording, monitoring, and management.
Works best with Synology solid-state drives
Engineered to handle intensive 24/7 workloads, Synology SSDs are designed to provide consistent high-performance.
2.5” SSD SAT5200
M.2 SSD SNV3400
1 Status indicator
2 Alert indicator
3 Power button and indicator
4 LAN indicator
5 Drive status indicator
6 Drive tray
7 Drive tray lock
8 USB 3.2 Gen 1 port
9 Power port
10 System fan
11 PCIe expansion slot
12 Kensington Security Slot
13 Expansion port
14 1GbE RJ-45 port
15 Reset Button
16 USB 3.2 Gen 1 port
AMD Ryzen V1500B
4-core 2.2 GHz
Hardware Encryption Engine (AES-NI)
4 GB DDR4 ECC SODIMM
Memory Module Pre-installed
4 GB (4 GB x 1)
Total Memory Slots
Maximum Memory Capacity
32 GB (16 GB x 2)
Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
Maximum Drive Bays with Expansion Unit
18 (DX517 x 2)
M.2 Drive Slots
Compatible Drive Type* (See all supported drives)
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD
Maximum Single Volume Size*
Hot Swappable Drive
"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
Each internal volume (may consist of multiple drives) is expandable up to 108TB.
RJ-45 1GbE LAN Port
4 (with Link Aggregation / Failover support)
USB 3.0 Port
1 x Gen3 x8 slot (x4 link)
exFAT Access is purchased separately in Package Center.
Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
0°C to 40°C (32°F to 104°F)
-20°C to 60°C (-5°F to 140°F)
5% to 95% RH
3-year hardware warranty, extendable to 5-year coverage - EW201
The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
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Secure Payments for Retail
Payment terms for bulk trade
A leading data storage integrator since 2003 with an omnichannel presence covering all segments - retail (in-shop, online), reseller (local and export) and end-user (SMB, enterprise customers). In addition to numerous awards from brands, we have been honoured 3 times with the prestigious GEC Award for our storage expertise
How to Reach Us
Opp. Palm Beach Hotel
Khalid Bin Waleed Street, Bur Dubai.
Monday to Saturday
9.00 AM to 9.00 PM
( Closed between 2 PM-4PM)