NVR Hard Drives & Storage Solutions | Surveillance-Grade Drives

Plan Your Deployment

Retention targets and required storage capacity
Surveillance-grade drive workload and duty cycle needs
RAID level selection and redundancy planning
Compatibility with your NVR platform and bays
Replacement strategy and lifecycle management

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Western Digital

SKU: WD43PURZ

WD Purple 4TB Surveillance Hard Drive (WD43PURZ)
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$163.99

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Hikvision

SKU: HK-HDD6T

Hikvision HK-HDD6T 6TB Surveillance Hard Drive

6TB surveillance drive with 7200 RPM for continuous 24/7 recording
- 6TB capacity retains ~4 weeks of 4MP footage from 4-camera systems
- 7200 RPM spindle speed handles multi-stream recording without thermal stress
- 128MB cache buffer smooths sustained write operations in NVR/DVR deployments
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$330.00 $258.99 Save $71.01

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Hikvision

SKU: HK-HDD10T

Hikvision HK-HDD10T 10TB Surveillance Hard Drive

10TB surveillance drive with 7200 RPM for 24/7 DVR/NVR recording
- 10TB capacity stores 90–180 days of continuous HD footage per camera
- 7200 RPM spindle speed handles multi-stream recording from 4–16+ cameras
- 256MB cache and SATA interface integrate directly into DVR/NVR systems
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$492.00 $433.99 Save $58.01

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Hikvision

SKU: HK-HDD12T

Hikvision HK-HDD12T 12TB Surveillance Hard Drive

12TB surveillance drive with 7200 RPM for 24/7 continuous recording
- 12TB capacity supports extended retention with minimal footage overwrites
- 7200 RPM spin speed balanced for sustained multi-stream recording performance
- 256MB cache and SATA interface compatible with DVRs, NVRs, and surveillance systems
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$616.00 $506.99 Save $109.01

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Hikvision

SKU: HK-HDD4T

Hikvision HK-HDD4T 4TB Surveillance Hard Drive

4TB surveillance drive for 24/7 DVR/NVR recording with 30–60 day retention
- 7200 RPM spindle speed handles multi-stream 1080p recording without frame drops
- 128MB cache buffer reduces latency spikes during simultaneous playback and recording
- SATA 3.5-inch form factor fits standard surveillance systems with quick installation
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$479.99

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ACTi

SKU: PHDD-1200

Acti PHDD-1200 1TB 2.5" Hard Disk Drive

1TB 2.5" drive with PoE power for Acti NVR systems
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$474.00 $359.99 Save $114.01

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ACTi

SKU: PHDD-2200

Acti PHDD-2200 1TB 3.5" Hard Disk Drive

1TB 3.5" HDD for Acti ENR surveillance NVR systems
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$1,403.00 $1,062.99 Save $340.01

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ACTi

SKU: PHDD-2301

Acti PHDD-2301 Hgst Ultrastar 7k6000 2TB Hard Disk

2TB 3.5" SATA drive for Acti NVR surveillance recording with PoE power
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$3,352.00 $2,535.99 Save $816.01

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ACTi

SKU: PHDD-2501

Acti PHDD-2501 4TB 3.5" Hard Disk Drive

4TB 3.5" surveillance drive for Acti NVR & compatible systems
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$2,891.00 $2,187.99 Save $703.01

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ACTi

SKU: PHDD-2702

Acti PHDD-2702 WD 6TB 3.5" Hard Disk Drive

6TB 3.5" surveillance drive with 7200 RPM for 24/7 NVR recording
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$3,438.00 $2,602.99 Save $835.01

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ACTi

SKU: PHDD-2900

Acti PHDD-2900 WD 8TB 3.5" Hard Disk Drive

8TB 3.5" rack-mount drive with PoE power for Acti NVR systems
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$3,510.00 $2,655.99 Save $854.01

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ACTi

SKU: PHDD-2A00

Acti PHDD-2A00 WD WD101KRYZ 10TB 3.5 Hard Disk Drive

10TB 3.5" enterprise HDD for continuous NVR surveillance recording
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$5,459.00 $4,130.99 Save $1,328.01

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ACTi

SKU: PHDD-2B01

Acti PHDD-2B01 Hgst Ultrastar 7k6000 12TB Hard Disk Drive

12TB 3.5" SATA drive for 24/7 surveillance NVR storage
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$5,004.00 $3,786.99 Save $1,217.01

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ACTi

SKU: PHDD-2E01

Acti PHDD-2E01 Hgst Ultrastar 7k6000 14TB Hard Drive

14TB enterprise surveillance drive for continuous NVR recording
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$5,126.00 $3,878.99 Save $1,247.01

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ACTi

SKU: PHDD-2J00

Acti PHDD-2J00 WD Ultrastar 22TB 3.5" Hard Disk Drive

22TB 3.5" surveillance drive for Acti NVR systems, 7200 RPM SATA
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$7,992.00 $6,048.99 Save $1,943.01

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ACTi

SKU: PHDD-2M00

Acti PHDD-2M00 WD Ultrastar 24TB 3.5" Hard Disk Drive

24TB surveillance drive for continuous NVR recording in rack systems
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$7,272.00 $5,502.99 Save $1,769.01

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What to Look For When Buying

The decisions that matter most before you spec.

Retention Math & Capacity Sizing

Retention depends on camera bitrate, frame rate, and motion detection settings—not just drive capacity. A common mistake is underestimating write throughput: bitrate and motion storage traps cause premature drive failure or inadequate archival. Calculate expected daily footage volume and multiply by your retention window (7–90 days typical) before selecting drive size.

Surveillance-Grade vs. Consumer Drives

Consumer SATA drives fail under continuous NVR write workloads due to thermal stress and firmware optimized for bursty access. Surveillance drives use higher MTBF ratings (mean time between failure), optimized firmware for streaming, and passive cooling designed for 24/7 operation in enclosed NVR chassis. The cost difference is small; failure in production costs far more.

Throughput Bottlenecks at Scale

Storage throughput is the silent killer of large systems. NVR controllers have finite I/O bandwidth; adding more drives doesn't proportionally increase write speed if the interface is saturated. Multi-camera, high-bitrate deployments require redundant storage controllers or NAS appliances with adequate aggregate bandwidth.

RAID & Redundancy Strategy

Single-drive NVRs lose footage when a drive fails. RAID 5 (parity across 3+ drives) protects against single-drive loss; RAID 6 protects against two simultaneous failures. However, RAID rebuild times are lengthy—use hot-spares and monitor drive health with S.M.A.R.T. alerts. For mission-critical systems, redundant storage architecture prevents data loss during critical incidents.

Form Factor & NVR Compatibility

NVRs accept 3.5" SATA, 2.5" SATA, or M.2 NVMe depending on design. Network video recorders vary widely in internal bay count and acceptable drive heights. Verify drive model compatibility with your NVR OEM before purchase; some vendors restrict third-party drives or require firmware updates.

Thermal & Environmental Constraints

Drives in sealed NVR chassis experience ambient temperatures 10–15°C above room conditions. Check drive operating range (typically 0–60°C); undersized cooling or outdoor installations require temperature monitoring. Vibration from adjacent drives and fans accelerates wear—mechanical isolation and firmware thermal throttling are critical in dense storage arrays.

Technology Stack

The specs and acronyms that actually affect nvr hard drives & storage performance.

MTBF (Mean Time Between Failure)

Manufacturer-rated expected hours until a drive fails under normal use. Surveillance drives typically claim 1M+ MTBF; consumer drives 300K–600K. MTBF is statistical, not guaranteed—monitor actual failure rates in your fleet and replace aging drives proactively.

Write Throughput & IOPS

Measured in MB/s for sequential writes and I/O operations per second for random access. NVR storage requires sustained write throughput; a drive rated 200 MB/s sustained must deliver that under continuous 24/7 load, not peak conditions. RAID arrays and multi-drive systems must aggregate throughput across all drives.

Workload Rating (Annualized Workload Volume)

Specified in TB written per year; surveillance drives handle 550 TB/year or higher. This differs from consumer/desktop drives (180–300 TB/year) and reflects the continuous streaming nature of video recording. Exceeding this rating voids warranties and shortens drive lifespan.

RAID Levels (5, 6, 10)

RAID 5 distributes parity across 3+ drives, tolerating one failure. RAID 6 uses dual parity for two-drive fault tolerance. RAID 10 mirrors drives and stripes across pairs (minimum 4 drives, highest cost but fastest). Choice depends on recovery time tolerance and available budget; larger NVR deployments favor RAID 6.

RPM & Seek Time

3.5" drives typically run 5,400–7,200 RPM; 2.5" drives 5,400 RPM. Lower RPM reduces heat and power but increases access latency. For streaming video, RPM matters less than sustained throughput; seek time affects random playback performance. SSD/NVMe eliminates these mechanical limitations entirely.

S.M.A.R.T. Monitoring

Self-Monitoring, Analysis and Reporting Technology provides real-time health metrics: temperature, reallocated sector count, and power-on hours. Integration with video management software or NVR firmware enables predictive alerts before failure, allowing proactive drive replacement.

Typical Deployment Scenarios

Small Multi-Site Installation (8 cameras, 30-day retention)

A 16-camera two-location deployment with Hikvision or ACTi NVRs requires approximately 8–12 TB per site depending on resolution and bitrate. Use two 6–8 TB surveillance-grade 3.5" SATA drives in each NVR (one active, one hot-spare) to avoid data loss. Monitor retention consistency across locations.

Mid-Market Campus (48 cameras, 90-day retention, RAID 5)

A K-12 school or retail chain spanning 3–4 buildings needs centralized NAS storage: 48 TB–72 TB raw capacity to achieve 90-day retention at 2–4 Mbps average bitrate. Deploy a RAID 5 array with 6× 12 TB surveillance drives plus one hot-spare. This protects against single-drive failure during school surveillance deployments. Pair with redundant NVRs for failover.

Enterprise Data Center (200+ cameras, 180-day retention, RAID 6)

Large corporate or transportation hub deployments require RAID 6 arrays: 200+ TB usable capacity with dual-parity protection. Use 8–12 drives per array, distributed across multiple controllers to avoid core network collapse. Integrate with VMS software for tiered storage (hot SSD cache + archive HDD pool).

Edge Recording & Failover (4K multi-stream NVR buffering)

High-bandwidth 4K NVRs require low-latency SSD storage for edge buffering to prevent NVR throughput starvation. Add 2–4 TB NVMe or SSD as temporary write cache, synced asynchronously to larger RAID HDD array. This decouples camera ingest from long-term storage I/O contention.

Frequently Asked Questions

What's the difference between surveillance drives and regular hard drives?

Surveillance drives are engineered for 24/7 continuous streaming with higher annualized workload ratings (550+ TB/year vs. 180 TB/year), optimized firmware that prioritizes streaming over random access, and thermal design suited for warm NVR chassis. They cost 10–20% more but survive years of NVR duty; consumer drives typically fail within 12–24 months in the same role.

How do I calculate how much storage I need?

Multiply: (number of cameras) × (average bitrate in MB/s) × (86,400 seconds/day) × (retention days) ÷ 1,000 = storage in GB. Example: 16 cameras, 2 MB/s each, 30 days = 16 × 2 × 86,400 × 30 ÷ 1,000 = 83 TB. Always add 20% overhead for RAID parity and system files. See retention math for IP cameras for motion-based adjustments.

Should I use RAID 5 or RAID 6 for my NVR storage?

RAID 5 (one-drive fault tolerance) is standard for 4–6 drive arrays in small-to-medium deployments. RAID 6 (two-drive tolerance) is essential for larger arrays (8+ drives) or long retention windows because rebuild time after a single-drive failure is lengthy—a second failure during rebuild causes total data loss. For critical systems, always use RAID 6 with hot-spares.

Can I mix different drive models or capacities in an NVR?

Most modern NVRs support mixed drives, but this is not recommended. Different models may have different thermal profiles, firmware quirks, or failure characteristics, complicating diagnostics. If using RAID, all drives should be identical model and capacity for predictable rebuild times and failure patterns. Always verify your NVR documentation.

What does S.M.A.R.T. monitoring tell me, and how often should I check it?

S.M.A.R.T. reports temperature, reallocated sectors, power-on hours, and spin-up time. A sudden spike in reallocated sectors or rising temperature signals imminent failure. Most VMS platforms and NVR firmware support automated S.M.A.R.T. alerts via email or syslog—configure daily health checks. Manual checks via command line are sufficient for small deployments, but automation is critical at scale.

Why do NVRs sometimes show lower usable storage than the drive's rated capacity?

Drives are sold in decimal (1 TB = 1,000 GB) but formatted in binary (1 TiB = 1,024 GiB). Additionally, NVR firmware reserves space for system files, metadata, and write-ahead logs. A nominal 8 TB drive typically yields 7.2–7.5 TB usable in an NVR. RAID overhead further reduces usable capacity: a RAID 5 array with 6× 8 TB drives yields roughly 40 TB usable (not 48 TB). Factor this into capacity planning.

NVR Hard Drives & Storage

Plan Your Deployment

Showing Results for NVR Hard Drives & Storage

WD Purple 4TB Surveillance Hard Drive (WD43PURZ)

Hikvision HK-HDD6T 6TB Surveillance Hard Drive

Hikvision HK-HDD10T 10TB Surveillance Hard Drive

Hikvision HK-HDD12T 12TB Surveillance Hard Drive

Hikvision HK-HDD4T 4TB Surveillance Hard Drive

Acti PHDD-1200 1TB 2.5" Hard Disk Drive

Acti PHDD-2200 1TB 3.5" Hard Disk Drive

Acti PHDD-2301 Hgst Ultrastar 7k6000 2TB Hard Disk

Acti PHDD-2501 4TB 3.5" Hard Disk Drive

Acti PHDD-2702 WD 6TB 3.5" Hard Disk Drive

Acti PHDD-2900 WD 8TB 3.5" Hard Disk Drive

Acti PHDD-2A00 WD WD101KRYZ 10TB 3.5 Hard Disk Drive

Acti PHDD-2B01 Hgst Ultrastar 7k6000 12TB Hard Disk Drive

Acti PHDD-2E01 Hgst Ultrastar 7k6000 14TB Hard Drive

Acti PHDD-2J00 WD Ultrastar 22TB 3.5" Hard Disk Drive

Acti PHDD-2M00 WD Ultrastar 24TB 3.5" Hard Disk Drive

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What to Look For When Buying

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