Best Hard Drives for CCTV & Surveillance
CCTV and surveillance systems write continuously, often across multiple camera streams simultaneously. This demands drives built for 24/7 sequential write workloads, low heat output, and long retention at the lowest cost per terabyte. Consumer desktop drives are not designed for this duty cycle and will fail prematurely under sustained recording loads.
What makes a surveillance drive different
Surveillance-rated drives (like WD Purple and Seagate SkyHawk) are firmware-tuned for sequential writes from multiple video streams, with AllFrame or similar technology to reduce dropped frames. They run cooler under sustained write loads and are rated for higher annual workloads than desktop drives. For systems with fewer cameras, enterprise or NAS drives also work well. The key is 24/7 rating and adequate write endurance.
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Surveillance-Rated Drives
Purpose-built surveillance drives from WD Purple and Seagate SkyHawk lines, designed for always-on DVR and NVR recording workloads.
Seagate Skyhawk AI 24TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST24000VE002)
Seagate Skyhawk AI 20TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST20000VE003)
Seagate Bare Drives Skyhawk 8TB Surveillance Hard Drive SATA 6GB/S 256MB Cache Frustration Free Packaging 3.5 Internal Bare/OEM Drive
Seagate Skyhawk ST6000VX001 6TB 3.5" Internal Hard Drive - SATA
WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX [Old Version]
Seagate Skyhawk AI 16TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with Drive Health Management and in-House Rescue Services (ST16000VE004)
Western Digital 26TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 512 MB Cache, 3.5" - WD260PURP
Seagate Skyhawk AI 12TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for DVR NVR Security Camera System with in-House Rescue Services – Frustration Free Packaging (ST12000VE003)
High-Capacity Retention Drives (8 TB+)
More capacity means longer recording retention before overwriting. Essential for systems with many cameras or compliance requirements that mandate extended footage storage.
HGST Ultrastar He12 | HUH721212ALE600 | 12TB 7.2K RPM SATA-6Gb/s 3.5" 256MB cache Hard Disk Drive
Seagate Skyhawk AI 24TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST24000VE002)
Seagate Skyhawk AI 20TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST20000VE003)
Seagate Bare Drives Skyhawk 8TB Surveillance Hard Drive SATA 6GB/S 256MB Cache Frustration Free Packaging 3.5 Internal Bare/OEM Drive
Western Digital Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS)
WD-40 Ultrastar HE12 12TB SAS 512E
HGST Ultrastar He12 HUH721212AL4201 12 TB Hard Drive - SAS [12Gb/s SAS] - 3.5 Drive - Internal
WD Ultrastar DC HC570 0F48155 22 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method
Enterprise Drives for Large CCTV Installations
For commercial installations with dozens of cameras, enterprise drives offer higher workload ratings (550 TB/year), longer warranties, and better sustained write performance than consumer surveillance lines.
Why this matters: Enterprise drives like Exos and Ultrastar handle heavier write workloads than consumer surveillance drives (typically rated at 180 TB/year). For installations with 32+ cameras recording at high resolution, enterprise-grade endurance is worth the premium.
HGST Ultrastar He12 | HUH721212ALE600 | 12TB 7.2K RPM SATA-6Gb/s 3.5" 256MB cache Hard Disk Drive
Western Digital Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS)
WD-40 Ultrastar HE12 12TB SAS 512E
HGST Ultrastar He12 HUH721212AL4201 12 TB Hard Drive - SAS [12Gb/s SAS] - 3.5 Drive - Internal
WD Ultrastar DC HC570 0F48155 22 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method
Seagate EXOS X20 18TB SAS 3.5IN 7200RPM 6GB/S 512E/4K
ST14000NM0048 Seagate 14TB SAS 12 Gb/s (Not SATA) Exos X14 (New with Warranty) 3.5 Inch 7200 RPM 256MB Cache 512e 4Kn Enterprise Hard Drive HDD
Western Digital WUH721414ALE6L4 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 512MB Cache, 3.5"
Budget CCTV Storage
Affordable drives for smaller camera setups and home security. These deliver the best price per TB for basic recording needs.
HardDrive P77-6005GB: Footpeg Mount Clamps 1.5" Bar Black
MDD MAXDIGITALDATA 8TB 7200RPM 128MB Cache SAS 12.0Gb/s 3.5inch Internal Enterprise Hard Drive (MD8TSAS12872E) - [NOT a SATA HDD]
HP 3.5-Inch 4000 GB Hot-Swap 2 MB Cache Internal Hard Drive 693687-B21
Avolusion PRO-H1 Series 14TB 7200RPM USB 3.2 Gen2 (10Gbps) External Hard Drive (for Windows or MacOS Desktop PC/Laptop)
OSENTRiX BX100 14TB USB 3.2 Gen 2 USB-C External Hard Drive for Windows or MacOS Desktop PC/Laptop
HUS726040ALS210 HGST 4TB 7.2K 12G LFF SAS Hard Drive
Water Panther 16TB 7.2K RPM SAS 12Gb/s 3.5" HDD for Dell PowerEdge Servers | Enterprise Hard Drive in 14G Tray
Water Panther 16TB 7200 RPM SAS 12Gb/s 3.5-Inch Enterprise Hard Disk Drive in 12G 13G Tray Compatible with Dell PowerEdge Servers R730XD R730 T340 T330 T640 T630 T440
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