Replacement for BK821A: Drop-In Alternatives We Stock
Looking for a replacement for the BK821A (BK821A - HP StorageWorks MDS600 Hard Drive Array 35 x HDD 35 TB Installed HDD Capacity RAID Supported 70 x Total Bays 5U Rack-mountable)? Pro Disk Network ships HP 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 BK821A
| SKU | BK821A |
|---|---|
| Product | BK821A - HP StorageWorks MDS600 Hard Drive Array 35 x HDD 35 TB Installed HDD Capacity RAID Supported 70 x Total Bays 5U Rack-mountable |
| Stock status | In Stock |
| Detail page | View BK821A › |
Drop-in replacements for BK821A
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.
AP764A - HP StorageWorks MDS600 Hard Drive Array 35 x HDD 35 TB Installed HDD Capacity RAID Supported 70 x Total Bays 5U Rack-mountable
SKU: AP764A
Price: $12,746.87
C5141F - HP DLT Type IV Tape Cartridge 20/40GB Capacity Using DLT-4 Format 35/70GB or 40/80GB Capacity Using DLT-5 Format
SKU: C5141F
Price: $97.14
335921-B21 - HP StorageWorks Modular Smart Array 20 Storage Enclosure 2U 12 x 3.5-inch Hot-Pluggable SATA Drive Enclosure
SKU: 335921-B21
Price: $189.47
350171-001 - HP Fiber Channel Environment Monitoring Unit for StorageWorks M5214 Storage Array
SKU: 350171-001
Price: $73.68
356906-001 - HP Rail Kit for StorageWorks 70 Modular Smart Array / ProLiant DL320s Storage Server
SKU: 356906-001
Price: $160.00
AG637-63522 - HP StorageWorks EVA4400 Dual Controller Array Management Module
SKU: AG637-63522
Price: $397.89
582935-001 - HP StorageWorks P2000 G3 10GbE iSCSI MSA Array System Controller
SKU: 582935-001
Price: $757.89
335880-B21 - HP StorageWorks Modular Smart Array 500 G2 Storage Enclosure
SKU: 335880-B21
Price: $815.79
582935-002 - HP StorageWorks P2000 G3 10GbE iSCSI MSA Array System Controller
SKU: 582935-002
Price: $1,376.84
353803-B22 - HP 14 Bay StorageWorks Modular Smart Array 1000 SCSI Enclosure 4u
SKU: 353803-B22
Price: $8,787.95
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.