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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Synology DiskStation DS223J Network Attached Storage Drive (White)

Product ID: 551197648

Details

Brand
Synology
Colour
Black
Compatible devices
Android Phone
Product dimensions
16.5D x 10W x
Size
6.5 inches x x

🌐Cross-platform access anytime, anywhere

💾Comprehensive multi-destination backup

🔒100% data ownership & private cloud

Rp8724418

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Description

🔐 Elevate your digital domain with Synology DS223J — where your data feels right at home.

COMPACT POWERHOUSE - Lightweight and sleek tabletop design fits perfectly in your workspace without clutter.
TRUSTED RELIABILITY - Backed by a 2-year warranty and Synology’s renowned support—future-proof your digital life.
SEAMLESS SYNC SHARE - Effortlessly access and share files across Android, iOS, Windows, and macOS devices—stay connected everywhere.
ROCK SOLID DATA PROTECTION - Back up your entire media library or documents to multiple destinations for ultimate peace of mind.
OWN YOUR DATA OWN YOUR CLOUD - Secure private cloud storage with full data ownership—no middlemen, no compromises.

The Synology DiskStation DS223J is a compact, lightweight NAS device designed for professionals seeking secure, private cloud storage with seamless cross-platform access. It supports comprehensive backup options, ensuring your files and media are protected and easily shareable across Android, iOS, Windows, and macOS. With a sleek tabletop design and a 2-year warranty, it combines reliability with convenience for the modern digital workspace.

Specifications

ASIN	B0C8814GKB
Best Sellers Rank	#3,382 in Computers ( See Top 100 in Computers ) #3 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 (845)
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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Rp8724418

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered 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 Indonesia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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3 days ago

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