Replacement for RS2821RP: Drop-In Alternatives We Stock
Looking for a replacement for the RS2821RP (Synology RS2821RP+ 16-Bay 3U NAS Enclosure RackStation)? Pro Disk Network ships drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the RS2821RP
| SKU | RS2821RP |
|---|---|
| Product | Synology RS2821RP+ 16-Bay 3U NAS Enclosure RackStation |
| Current price | $6,065.68 |
| Stock status | In Stock |
| Detail page | View RS2821RP › |
Drop-in replacements for RS2821RP
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
SA3400 Synology SA3400 Highly scalable NAS equipped with an 8-core CPU and 16GB ECC RDIMM memory(Highly scalable NAS meeting extensive data storage needs)
SKU: SA3400
Price: $18,829.47
REXP-1620U-RP-US QNAP REXP-1620U-RP-US SAS/SATA/SSD 16-Bay 3U Rackmount RAID Expansion Enclosure for QNAP NAS
SKU: REXP-1620U-RP-US
Price: $6,019.50
EJ1600-V2-US QNAP EJ1600-V2-US SAS 12Gbps 16-Bay 3U Rackmount RAID Expansion Enclosure for QNAP NAS
SKU: EJ1600-V2-US
Price: $6,926.32
519345-001 - HP 16-Bay Backplane / Midplane Enclosure for BladeSystem C7000 Enclosure
SKU: 519345-001
Price: $212.63
190209-001 - HP StorageWorks Enclosure 4314R 14-Bay Single Ultra160 SCSI RackMount Storage Enclosure
SKU: 190209-001
Price: $265.26
1H4167-505 - Seagate NAS HDD 3TB 5900RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive for NAS SystemS
SKU: 1H4167-505
Price: $318.32
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.