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
165 mm x 100 x
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
ホワイト

🌐1Gbps LAN port for fast network access

💾2-bay storage supporting up to 36TB

🧠Quad-core CPU for smooth multitasking

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Description

🚀 Unlock your data’s full potential with Synology DS223j — your smart, secure, and scalable private cloud!

SMART DATA PROTECTION - Advanced snapshot and backup tools shield your files from ransomware and accidental loss.
INTUITIVE MEDIA MANAGEMENT - Organize photos and videos smartly with Synology Photos’ AI-powered sorting.
SEAMLESS MULTI DEVICE SYNC - Sync and share files across PCs, smartphones, and USB devices effortlessly.
MASSIVE STORAGE TOTAL CONTROL - Combine up to 36TB across two bays and own 100% of your data securely.
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 light users seeking a reliable private cloud solution. It supports up to 36TB storage, offers 1Gbps LAN connectivity, and features Synology’s DSM software for seamless multi-device file access, intelligent media management, and robust data protection including snapshots and backups. Perfect for professionals managing personal or small team data with ease and security.

Specifications

ASIN	B0C8814GKB
Amazon 売れ筋ランキング	パソコン・周辺機器 - 37,785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 - 29位
GTIN (Global Trade Identification Number)	00846504004768
UPC	846504004768
おすすめ度	4.5 5つ星のうち4.5 (802) var
カラー	ホワイト
サイズ	165 mm x 100 mm x 225.5 mm
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
保証内容	２年間
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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€ 535.28

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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.

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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