100% Genuine ProductsAll HDDs are original, sealed and tested before dispatch
📦
Same Day DispatchOrder before 2 PM — dispatched the same business day
🛡️
2-Year Carry-In WarrantyHassle-free replacement within warranty period
🔧
DVR/NVR CompatibleWorks with Hikvision, CP Plus, Dahua, Godrej & all major brands
📞
Dedicated SupportCall or WhatsApp 7387005986 for pre/post-purchase help
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Best Prices in IndiaCompetitive pricing with GST invoice — best value guaranteed
🔌 DVR / NVR Compatibility
Brand
DVR Compatible
NVR Compatible
Recommended HDD
Hikvision
✔
✔
D25 / Seagate SkyHawk
CP Plus
✔
✔
D25 / Seagate SkyHawk
Dahua
✔
✔
D25 / WD Purple
Godrej
✔
✔
D25 / Seagate SkyHawk
TVT / TVH
✔
✔
D25 / WD Purple
Uniview
✔
✔
Seagate SkyHawk
Generic / Local DVR
✔
✔
D25 CCTV HDD
🏷️ Brand-Wise CCTV Hard Disk Calculator & Compatibility Guide
CP Plus Storage Calculator — HDD Size for CP Plus DVR/NVR
Using a CP Plus DVR or NVR? Use the calculator at the top of this page — it works for every CP Plus model (4CH, 8CH, 16CH, 32CH). For a typical CP Plus 4-channel DVR with 1080p cameras recording 24x7 for 30 days, you'll need approximately 1TB; for an 8-channel setup, plan for 2TB. CP Plus DVRs support H.265+ compression, which cuts storage needs by up to 75% compared to H.264 — enable it in your DVR's video settings before choosing your HDD size.
All Hikvision DVR and NVR models use standard 3.5-inch SATA surveillance hard disks — there's no Hikvision-specific drive, but Hikvision officially recommends surveillance-grade drives such as Seagate SkyHawk, WD Purple, or D25. Hikvision's H.265+ codec (Smart Codec) can reduce bandwidth and storage by up to 75%, so a 2TB drive on a Hikvision NVR can often store as much footage as 4TB would on an older H.264 system.
Dahua DVR and NVR systems are fully compatible with standard SATA surveillance hard disks — we recommend WD Purple or D25 for Dahua setups. Dahua's Smart H.265+ codec offers similar storage savings to Hikvision's, so always confirm H.265+ is enabled in your Dahua DVR menu before sizing your drive.
Note: verify/create a dedicated /collections/dahua or /collections/cp-plus collection page (mirroring the existing /collections/hikvision page) if you want brand-specific product filtering rather than linking to the general CCTV hard disk collection.
📅 How Many Days Will Your HDD Record? (2MP · H.264+ · 24x7)
See the table below — based on 1080p (2MP) cameras, H.264+ compression, and 24-hour continuous recording. Switch tabs to check recording days for each HDD size:
💰 500 GB CCTV HDD — From ₹1,199 | D25 Surveillance | Free Delivery | Shop Now →
💰 1 TB CCTV HDD — From ₹3,499 | D25 / Seagate SkyHawk | Free Delivery | Shop Now →
💰 2 TB CCTV HDD — From ₹5,499 | D25 / Seagate SkyHawk | Free Delivery | Shop Now →
💰 3 TB CCTV HDD — From ₹7,499 | Seagate SkyHawk | Free Delivery | Shop Now →
💰 4 TB CCTV HDD — From ₹9,999 | D25 / WD Purple | Free Delivery | Shop Now →
💰 6 TB CCTV HDD — From ₹16,999 | Seagate SkyHawk | Free Delivery | Shop Now →
💰 8 TB CCTV HDD — From ₹22,499 | WD Purple Pro | Free Delivery | Shop Now →
💰 10 TB CCTV HDD — From ₹35,999 | Seagate SkyHawk | Free Delivery | Shop Now →
Cameras
7 Days
15 Days
30 Days
Verdict
🎥 1 Camera
✅ OK
✅ OK
⚠️ Tight
Good for 1 cam upto 15 days
🎥🎥 2 Cameras
✅ OK
⚠️ Tight
❌ Full
Use for 2 cams, max 10 days
📷 4 Cameras
⚠️ Tight
❌ Full
❌ Full
Only 5–6 days max
📷 8 Cameras
❌ Full
❌ Full
❌ Full
Not recommended
📷 16 Cameras
❌ Full
❌ Full
❌ Full
Not recommended
📷 32 Cameras
❌ Full
❌ Full
❌ Full
Not recommended
Cameras
7 Days
15 Days
30 Days
Verdict
🎥 1 Camera
✅ OK
✅ OK
✅ OK
Perfect — 30+ days easily
🎥🎥 2 Cameras
✅ OK
✅ OK
✅ OK
Good — full 30 days
📷 4 Cameras
✅ OK
✅ OK
⚠️ Tight
Comfortable upto 20 days
📷 8 Cameras
✅ OK
⚠️ Tight
❌ Full
Max 10 days recording
📷 16 Cameras
⚠️ Tight
❌ Full
❌ Full
Only 4–5 days, upgrade needed
📷 32 Cameras
❌ Full
❌ Full
❌ Full
Not suitable
Cameras
7 Days
15 Days
30 Days
Verdict
🎥 1 Camera
✅ OK
✅ OK
✅ OK
60+ days possible
🎥🎥 2 Cameras
✅ OK
✅ OK
✅ OK
Full 30+ days comfortable
📷 4 Cameras
✅ OK
✅ OK
✅ OK
Perfect for home (30 days)
📷 8 Cameras
✅ OK
✅ OK
⚠️ Tight
Comfortable upto 22 days
📷 16 Cameras
✅ OK
⚠️ Tight
❌ Full
Max 10–11 days
📷 32 Cameras
⚠️ Tight
❌ Full
❌ Full
Only 5 days, upgrade needed
Cameras
7 Days
15 Days
30 Days
Verdict
🎥 1 Camera
✅ OK
✅ OK
✅ OK
90+ days
🎥🎥 2 Cameras
✅ OK
✅ OK
✅ OK
45+ days
📷 4 Cameras
✅ OK
✅ OK
✅ OK
Full 30+ days
📷 8 Cameras
✅ OK
✅ OK
✅ OK
Good 30 days for shop setup
📷 16 Cameras
✅ OK
✅ OK
⚠️ Tight
Comfortable upto 18 days
📷 32 Cameras
✅ OK
⚠️ Tight
❌ Full
Max 8–9 days
Cameras
7 Days
15 Days
30 Days
Verdict
🎥 1 Camera
✅ OK
✅ OK
✅ OK
120+ days overkill
🎥🎥 2 Cameras
✅ OK
✅ OK
✅ OK
60+ days
📷 4 Cameras
✅ OK
✅ OK
✅ OK
Full 45+ days
📷 8 Cameras
✅ OK
✅ OK
✅ OK
30+ days — Ideal office setup
📷 16 Cameras
✅ OK
✅ OK
✅ OK
Full 30 days comfortable
📷 32 Cameras
✅ OK
✅ OK
⚠️ Tight
Max 17–18 days
Cameras
7 Days
15 Days
30 Days
Verdict
🎥 4 Cameras
✅ OK
✅ OK
✅ OK
70+ days
📷 8 Cameras
✅ OK
✅ OK
✅ OK
45+ days
📷 16 Cameras
✅ OK
✅ OK
✅ OK
Full 30+ days — Ideal warehouse
📷 24 Cameras
✅ OK
✅ OK
✅ OK
Good 30 days
📷 32 Cameras
✅ OK
✅ OK
⚠️ Tight
Max 25 days
📷 48 Cameras
✅ OK
⚠️ Tight
❌ Full
Max 17 days
Cameras
7 Days
15 Days
30 Days
Verdict
📷 8 Cameras
✅ OK
✅ OK
✅ OK
60+ days
📷 16 Cameras
✅ OK
✅ OK
✅ OK
Full 45 days
📷 24 Cameras
✅ OK
✅ OK
✅ OK
Full 30+ days
📷 32 Cameras
✅ OK
✅ OK
✅ OK
Full 30 days — Large campus
📷 48 Cameras
✅ OK
✅ OK
⚠️ Tight
Max 22 days
📷 64 Cameras
✅ OK
⚠️ Tight
❌ Full
Max 17 days
Cameras
7 Days
15 Days
30 Days
Verdict
📷 8 Cameras
✅ OK
✅ OK
✅ OK
75+ days — overkill
📷 16 Cameras
✅ OK
✅ OK
✅ OK
55+ days
📷 32 Cameras
✅ OK
✅ OK
✅ OK
Full 30+ days — Bank/Enterprise
📷 48 Cameras
✅ OK
✅ OK
✅ OK
Full 28 days
📷 64 Cameras
✅ OK
✅ OK
⚠️ Tight
Max 20 days
📷 128 Cameras
✅ OK
⚠️ Tight
❌ Full
Use multiple HDDs
📌 Based on: 1080p (2MP) · H.264+ compression · 24x7 continuous recording · 20% buffer. Switch to H.265+ in your DVR settings to get 2× more recording days from the same HDD.
CCTV Hard Disk Storage Calculator — Complete Guide for India 2026
Choosing the right hard disk for your CCTV system is one of the most important decisions when setting up surveillance. Our free CCTV HDD storage calculator eliminates guesswork — enter your cameras, resolution, recording hours and retention period to get an exact, accurate storage recommendation instantly.
How Is Storage Calculated?
The standard surveillance storage formula is: Storage (GB) = Bitrate × 3600 × Hours/Day × Cameras × Days ÷ 8 ÷ 1000. Our calculator applies your compression type (H.264, H.264+, H.265, H.265+) and a 20% safety buffer for filesystem overhead, giving you a real-world reliable estimate every time.
Why You Must Use a Surveillance HDD — Not a Normal Desktop HDD
Standard desktop hard disks (Seagate Barracuda, WD Blue) are designed for occasional reads and writes — not 24x7 continuous data streams from CCTV cameras. Using them in a DVR or NVR typically causes failure within 6–12 months. Surveillance-grade HDDs like D25, Seagate SkyHawk, and WD Purple are built for continuous operation with:
180 TB/year workload rating (vs 55 TB/year for desktop HDDs)
Optimised firmware for multi-stream simultaneous recording
Enhanced vibration tolerance for multi-drive NVR systems
ImagePerfect / AllFrame AI technology to prevent frame drops
Rated MTBF of 1 million+ hours for long-term reliability
H.264 vs H.265 vs H.265+ — Which Saves the Most Storage?
H.265 (HEVC) compresses video by up to 50% more than H.264 at the same image quality. H.265+ (used by Hikvision, Dahua, CP Plus) uses AI-based scene analysis to save up to 70–75% compared to standard H.264. If your DVR or NVR supports H.265, always enable it — you'll either need a smaller hard disk or store twice as many days on the same capacity.
Common CCTV Setups & Recommended HDD Size in India
Banks, ATMs, petrol pumps, and high-security areas
👥 Who Should Buy This HDD?
This surveillance hard disk is the right choice if:
You have a DVR or NVR system at home, office, shop, or factory
Your current HDD has filled up and the DVR has stopped recording
You want to extend your CCTV recording retention from 7 days to 30+ days
Your existing HDD has failed or started making clicking/grinding sounds
You are setting up a new CCTV system and need to buy the right HDD
You want to replace a desktop HDD that was incorrectly installed in a DVR
⚠️ Not recommended for use as a laptop hard disk or primary PC drive. This is a surveillance-grade HDD optimised for continuous 24x7 CCTV recording only.
🔧 How to Install HDD in DVR / NVR (Step by Step)
1
Power Off the DVR / NVRTurn off and unplug the DVR/NVR from power completely before opening it.
2
Open the DVR CoverUnscrew the 2–4 screws on the back or sides of the DVR casing. Gently slide or lift the top cover off.
3
Place the Hard DiskPlace the 3.5-inch HDD in the HDD slot or tray inside the DVR. Align the screw holes with the casing.
4
Connect SATA Data CablePlug the SATA data cable from the DVR motherboard into the SATA port on the HDD. It clicks into place.
5
Connect SATA Power CablePlug the power cable (wider SATA power connector) from the DVR PSU into the HDD power port.
6
Screw the HDD TightFix the HDD using the screws provided. Do not overtighten — just firm enough to prevent vibration.
7
Close the DVR & Power OnReplace the DVR cover, plug in power, and switch on. The DVR will boot up and detect the new HDD.
8
Format the HDD in DVR MenuGo to DVR Menu → Storage → HDD Management → Select the HDD → Click Format. This is mandatory before recording starts.
⚠️ Always format the HDD through the DVR menu — not on a PC. PC-formatted HDDs may not be recognised by some DVR systems.
🖥️ How to Install HDD in a Desktop Computer
1
Shut Down & Unplug PCCompletely power off your desktop computer and unplug from the wall socket before opening the case.
2
Open the PC CabinetRemove the side panel of your CPU cabinet by unscrewing the thumb screws at the back.
3
Locate the HDD BayFind the 3.5-inch HDD tray or cage inside your cabinet — usually at the front bottom of the cabinet.
4
Slide In the Hard DiskSlide the HDD into the tray so the SATA ports face inward. Align the screw holes and fix with screws.
5
Connect SATA Data CableConnect one end of the SATA cable to the HDD and the other end to an available SATA port on the motherboard.
6
Connect Power from PSUPlug a SATA power connector from your power supply unit (PSU) into the HDD power port.
7
Close Cabinet & Power OnReattach the side panel, plug in and power on the PC. The BIOS should detect the new hard disk automatically.
8
Initialise in Windows Disk ManagementOpen Disk Management (Right-click My Computer → Manage → Disk Management). Initialise and format the new disk as NTFS.
💡 Surveillance HDDs work in PCs but are optimised for CCTV recording. For PC-only use, a standard desktop HDD like Seagate Barracuda is more suitable.
⚠️ Important Notes & Warnings
Do not use desktop HDDs in CCTV DVR/NVR — they will fail prematurely under continuous recording load.
Always format the HDD via the DVR/NVR menu before use — the DVR must initialise it, not Windows.
Handle HDDs carefully — internal platters are sensitive to drops, shocks, and strong magnets.
Ensure proper ventilation inside your DVR to prevent HDD overheating, which reduces lifespan.
Do not mix HDDs of different brands/sizes in RAID configurations without checking DVR compatibility.
Back up critical footage to a separate device — DVR HDDs overwrite automatically when full.
Power the DVR off correctly — abrupt power cuts can cause HDD file system corruption over time.
📞 Need help selecting the right HDD? Call or WhatsApp us at 7387005986 — Mon to Sat, 10 AM to 7 PM.
📊 Bitrate & Storage Reference
Resolution
FPS
H.264 Bitrate
H.265 Bitrate
GB / Cam / Day
Best Use Case
720p (1MP)
15
1 Mbps
0.5 Mbps
~11 GB
Home, Budget
1080p (2MP) ⭐
15
2 Mbps
1 Mbps
~22 GB
Shops, Office
3MP
15
3 Mbps
1.5 Mbps
~32 GB
Medium Sites
4MP
20
5 Mbps
2.5 Mbps
~54 GB
Warehouses
5MP
20
6.5 Mbps
3.2 Mbps
~70 GB
Large Sites
4K / 8MP
25
12 Mbps
6 Mbps
~130 GB
Banks, ATMs
❓ Frequently Asked Questions
For 4 cameras at 1080p, 15 FPS, 24x7 recording for 30 days with H.265+ compression, you need approximately 800 GB to 1 TB. We recommend the D25 1TB Surveillance HDD (₹5,299) available at WeKart with free delivery and 2-year warranty.
No. Desktop HDDs are not designed for 24x7 continuous recording and will fail within 6–12 months in a DVR system. Always use a surveillance-grade HDD like D25, Seagate SkyHawk, or WD Purple for reliable long-term performance.
The best HDDs for Hikvision DVR in India are Seagate SkyHawk, WD Purple, and D25 Surveillance HDD. Any 3.5-inch SATA surveillance HDD works with Hikvision DVR and NVR. Buy the correct size using our calculator above and order from WeKart with free delivery.
For a standard CP Plus 4-channel DVR with 1080p cameras recording 24x7, plan for 1TB for 30 days of retention. An 8-channel CP Plus setup needs approximately 2TB. Enable H.265+ in your CP Plus DVR settings to cut this requirement by up to 75%.
Dahua DVR and NVR systems accept any standard 3.5-inch SATA surveillance hard disk — WD Purple and D25 are the most popular choices for Dahua setups sold at WeKart, both with 2-year warranty and free India-wide delivery.
With 8 cameras at 1080p, 15 FPS, H.265+ compression recording 24x7 — a 2TB HDD stores approximately 28–35 days of footage before overwriting. With H.264, the same setup stores only 14–18 days. Use our calculator for exact days based on your setup.
H.265 (HEVC) is a modern video compression codec that reduces file sizes by up to 50% vs H.264 at the same quality. H.265+ (by Hikvision, Dahua, CP Plus) can save up to 70–75%. Enable H.265 in your DVR settings to either buy a smaller HDD or store twice as many days.
Yes. You must format the HDD through the DVR menu after installation — go to DVR Menu → Storage → HDD Management → Format. Do not format it on a PC first. The DVR must initialise the HDD in its own format before recording can begin.
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