Is the memory upgradable?

No it can't. DS220J memory is fixed at 512 MB. Current software upgrade requires a minimum of 1 GB according to Synology's own notes. Avoid this model/brand.

what physical size harddrives can be used?

The hard drive "size" is not the physical size of the drive itself but the diameter of the platter inside the drive. A standard desktop HDD is 5.75" x 4" but has a 3.5" platter inside. Hence the name 3.5" drive even though it is physically much bigger. A notebook HDD measures 4" x 2.75" and referred to as a 2.5" drive.

If single drive is installed initially, then 2nd drive is added later. does raid 1 get configured? or does both drive need to be installed together?

I installed one drive initially, and then added a second drive later. The second drive was automatically added as a Raid 1 drive.

Can it be used as a datastore for esxi or backup VMs?

Technically you can but not recommended. You will likely get terrible performance because the CPU and memory is not designed for this use case. 512MB RAM is very low for a datastore. This model is really geared towards traditional file sharing and media streaming. You want something with higher CPU and read/wrtie caching like the DS218/DS218+.

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DiskStation DS223J Network Attached Storage Drive (White)

Product ID: 551197648

Details

Brand
Synology
Colour
Black
Material
Plastic
Product dimensions
16.5D x 10W x
Size
6.5 inches x x

🌐Cross-platform seamless access

💾Versatile backup destinations

🔒100% private cloud ownership

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Description

🔐 Elevate your digital workspace with secure, seamless storage that keeps you connected everywhere.

TRUSTED RELIABILITY - Backed by a 2-year warranty and top-tier customer ratings for peace of mind.
OWN YOUR DATA ALWAYS - Secure private cloud ensures your files stay yours—no third-party snooping.
PLUG PLAY SIMPLICITY - Quick installation guide and Synology support make setup a breeze—get started fast.
ACCESS ANYWHERE ANYTIME - Effortlessly sync and share across Android, iOS, Windows, and macOS devices.
ROCK SOLID DATA PROTECTION - Comprehensive backup options safeguard your media and documents with ease.

The Synology DiskStation DS223J is a compact, tabletop NAS device designed for professionals seeking secure, private cloud storage with cross-platform compatibility. It offers easy file sharing, comprehensive backup options, and a 2-year warranty, making it a reliable choice for managing and protecting your digital assets across multiple devices.

Specifications

ASIN	B0C8814GKB
Best Sellers Rank	#6,639 in Computers ( See Top 100 in Computers ) #5 in Network Attached Storage (NAS) Enclosures
Brand	Synology
Built-In Media	Main Unit X 1 Accessory Pack X 1 Quick Installation Guide X 1
Color	Black
Compatible Devices	Android Phone, Windows PC, iPhone, macOS
Customer Reviews	4.5 4.5 out of 5 stars (841)
Enclosure Material	Plastic
Global Trade Identification Number	00846504004768
Is Assembly Required	Yes
Item Dimensions D x W x H	16.5D x 10W x 22.6H centimeters
Item Type Name	NAS
Item Weight	0.87 Kilograms
Manufacturer	Synology
Mfr Part Number	DS223j
Model Number	DS223j
Mounting Type	Tabletop
Number of Items	1
Number of Packs	1
Size	6.5 inches x 3.94 inches x 8.9 inches
UPC	846504004768

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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R7585

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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