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BCD International BCD-SSD-4TB 3.84TB vSAS SED Mixed Use SSD
The BCD-SSD-4TB is a 3.84TB self-encrypting solid-state drive built on a 12Gbps vSAS interface, packaged in a 2.5in drive body that ships inside a 3.5in hybrid carrier. It's a Mixed Use endurance class drive, which puts it between read-intensive and write-intensive tiers — a fit for recording workloads and server storage pools that see a steady mix of ingest and playback rather than pure archival reads. Because evidence for this SKU is limited to core drive specifications, this page stays focused on what's verifiable rather than speculating on downstream compatibility.
Overview
BCD-SSD-4TB (often searched as BCD SSD 4TB) targets buyers who need drive-level encryption and enterprise interface bandwidth in a form factor that drops into either 2.5in or 3.5in bays without a separate adapter purchase. The 3.5in hybrid carrier is a practical detail for integrators standardizing on 3.5in drive sleds across a network video recorder or server chassis — one SKU covers both bay sizes instead of stocking a second bracket part number.
Key Features
- 3.84TB Capacity: enough headroom for a single-drive deployment in a mid-size recording or server array without needing to pool multiple smaller drives to hit your retention target.
- vSAS 12Gbps Interface: doubles the throughput ceiling of 6Gbps SAS/SATA links, which matters when multiple drives in an array are streaming simultaneous writes — the interface won't be the first thing to bottleneck.
- SED (Self-Encrypting Drive): encryption happens at the hardware level, so data at rest is protected even if the physical drive is removed from the chassis — relevant for any deployment handling footage or records with chain-of-custody requirements.
- Mixed Use Endurance: rated for a workload profile between read-intensive and write-intensive, appropriate for continuous-recording storage pools that are constantly being written to and periodically read back for review.
- 512e Sector Format: presents 512-byte logical sectors over a 4K physical sector, keeping compatibility with older RAID controllers and operating systems that expect legacy sector addressing.
- 2.5in Drive in 3.5in Hybrid Carrier: lets you standardize on 3.5in drive bays and hot-swap sleds across a rack while still running a 2.5in SSD internally — no separate bracket to source.
Integration & Compatibility
The 12Gbps vSAS interface is backward-compatible with 6Gbps SAS and SAS/SATA backplanes commonly found in rack servers and NVR chassis, though actual throughput is capped by the slower link when mixed with older hardware. Pair it with a rack power distribution unit sized for the chassis it's installed in, and confirm your RAID controller supports SED key management before deploying in an encrypted-at-rest configuration. For broader planning on matching drive count and capacity to retention needs, see the storage and retention planning guide.
Frequently Asked Questions
Q: What interface does the BCD-SSD-4TB use?
A: It uses a 12Gbps vSAS interface, which is backward-compatible with 6Gbps SAS and SAS/SATA backplanes.
Q: Is the BCD-SSD-4TB self-encrypting?
A: Yes, it's built as a SED (Self-Encrypting Drive), providing hardware-level encryption of data at rest.
Q: Does the BCD-SSD-4TB fit a 3.5in drive bay?
A: Yes, it ships as a 2.5in drive in a 3.5in hybrid carrier, so it installs in either 2.5in or 3.5in bays.
Q: What endurance class is the BCD-SSD-4TB rated for?
A: It's rated Mixed Use, positioned between read-intensive and write-intensive endurance tiers.
Q: What sector size does the BCD-SSD-4TB use?
A: It uses 512e sector format for compatibility with legacy RAID controllers and operating systems.

The BCD-SSD-4TB is a straightforward spec on paper but the details matter: 3.84TB on a 12Gbps vSAS link with SED encryption, shipped in a 3.5in hybrid carrier around a 2.5in drive. That carrier detail is the one integrators overlook.
Technical Highlights:
- 12Gbps vSAS: double the bandwidth ceiling of a 6Gbps SAS link — matters most in arrays where several drives are writing simultaneously and you don't want the interface to be the choke point.
- SED encryption: hardware-level encryption at rest, independent of OS or application-layer encryption — worth confirming your RAID controller's key management supports it before you standardize on SED drives fleet-wide.
- 2.5in-in-3.5in hybrid carrier: lets you run this SSD in a 3.5in hot-swap sled without sourcing a separate bracket, useful if your rack standardizes on 3.5in bays.
Deployment Considerations:
- 512e sector presentation keeps it compatible with older RAID controllers expecting 512-byte logical sectors, even though the physical media underneath is 4K-aligned.
- Mixed Use endurance means this isn't the drive to reach for on a pure write-intensive ingest tier — check your write-per-day requirement against the endurance class before committing to an all-SED array.
A reasonable fit for a rack-mounted recording server or NVR backend where drive encryption is a requirement and the chassis uses 3.5in hot-swap bays, letting you deploy a 2.5in SSD without a bracket workaround.
Compare with similar
Bcd International 384TB SSD Vsas Sed Mixed Use - Bcd-SSD-4TB
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