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 NASキット 2ベイ DS223j クアッドコアCPU搭載 1GBメモリ搭載ライトユーザー向け国内正規代理店フィールドレイク取扱品電話サポート対応品 DiskStation

Product ID: 729567595

Details

サイズ
標準品
ブランド
Synology
商品の寸法
226奥行き x 100幅
対応デバイス
デスクトップパソコン
色
単品

🌐1Gbps LAN port

💾2-bay storage up to 36TB

🧠Quad-core Realtek CPU

€ 512.95

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Description

🚀 Unlock your data’s full potential with Synology DS223j — your smart, secure, always-on private cloud!

SMART MEDIA ORGANIZATION - Automatically sort photos and videos by date with Synology Photos’ AI-powered smart sorting.
ROBUST DATA PROTECTION SUITE - Built-in snapshot replication and Hyper Backup shield your data from ransomware and accidental loss.
BEGINNER FRIENDLY YET POWERFUL - Intuitive Synology DSM OS combines ease of use with enterprise-grade features for home and small office.
MASSIVE STORAGE TOTAL CONTROL - Supports up to 36TB across 2 bays, giving you full ownership and seamless multi-device data management.
EFFORTLESS PRIVATE CLOUD ACCESS - Access your personal cloud anytime, anywhere with QuickConnect—no complex setup needed.

The Synology DS223j is a beginner-friendly 2-bay NAS equipped with a quad-core Realtek CPU and 1GB RAM, designed for home and light users. It supports up to 36TB of storage, offers seamless multi-device access via 1Gbps LAN and QuickConnect, and features advanced data protection tools like snapshot replication and Hyper Backup. With Synology’s intuitive DSM OS and smart media sorting, it’s the perfect solution for managing, protecting, and sharing your digital life securely from anywhere.

Specifications

ASIN	B0C8814GKB
Amazon 売れ筋ランキング	パソコン・周辺機器 - 3,267位 ( パソコン・周辺機器の売れ筋ランキングを見る ) ネットワーク接続ストレージ（NAS）エンクロージャ - 1位
GTIN (Global Trade Identification Number)	00846504004768
UPC	846504004768
おすすめ度	4.5 5つ星のうち4.5 (858) var
カラー	単品
サイズ	標準品
パック数	1
ブランド名	Synology
メーカー名	Synology
メーカー型番	DS223j
レンズマウントの種類	テーブルトップ
互換デバイス	デスクトップパソコン
付属品総数	1
保証内容	2年間
原産国	台湾
品目の寸法（D x W x H）	226奥行き x 100幅 x 165高さ cm
商品の重量	0.87 キログラム
型番	DS223j
組み立て式	はい

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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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TrustScore 4.5 | 7,300+ reviews

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€ 512.95

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Synology NASキット 2ベイ DS223j クアッドコアCPU搭載 1GBメモリ搭載 ライトユーザー向け 国内正規代理店フィールドレイク取扱品 電話サポート対応品 DiskStation

Details

Details

Description

Specifications

Common Questions

Synology NASキット 2ベイ DS223j クアッドコアCPU搭載 1GBメモリ搭載ライトユーザー向け国内正規代理店フィールドレイク取扱品電話サポート対応品 DiskStation