Hard Disk Price in Nepal
Hard disk buying guideHard disk FAQ
Hard disk buying guide: CCTV or PC, size, RPM and CMR/SMR
An internal hard disk (HDD) goes inside a desktop PC or a CCTV recorder. What it's for decides most of the choice. A disk in a DVR or NVR records all day, while a PC disk mostly stores files. After that it comes down to capacity and a few details on the spec sheet.
1. Surveillance drive or desktop drive
A CCTV recorder writes video day and night, so it needs a surveillance drive. WD builds WD Purple for continuous recording in DVRs and NVRs that run around the clock (WD). Toshiba designs its DT02 surveillance drives for 24x7 operation, with a workload rating of 180TB a year (Toshiba). On this page, every drive with "Surveillance" or "Purple" in its name is this type, from the WD 1TB Purple (WD10PURZ) up to the Seagate 8TB Surveillance HDD.
Surveillance drives also say how many cameras they're built for. Toshiba rates its 2TB and 4TB DT02 drives for up to 32 HD camera streams (Toshiba), and the Toshiba 6TB (DT02ABA600VH) for up to 64 (Toshiba). A desktop drive such as the Toshiba P300 1TB is made for a PC, for extra room for files, games and backups (Toshiba).
2. Check the size: 3.5-inch or 2.5-inch
Desktop PCs, DVRs and NVRs take 3.5-inch drives. Laptops take the smaller 2.5-inch size. The WD Purple and Toshiba drives here are 3.5-inch, so they won't go in a laptop. Internal hard disks connect by SATA, so a desktop needs a free SATA port on the motherboard and a SATA power lead from the power supply.
If your laptop has a 2.5-inch drive bay, a 2.5-inch SSD like the OSCOO 240GB 2.5 Inch SSD on this page fits it and is much faster than a hard disk. See SSD price in Nepal for NVMe and other SSDs.
3. RPM: 7200 or 5400
RPM is how fast the platters spin. A 7200 RPM drive reads and writes a little faster than a 5400 RPM one, which helps when a PC opens big files from it. Desktop drives come in both speeds. Toshiba, for example, makes its P300 desktop line in 5,400 and 7,200 rpm versions (Toshiba), so check the RPM in the product name or on the spec sheet.
Many surveillance drives spin slower. Toshiba's DT02 drives run at 5400 rpm, which Toshiba calls an energy-saving design (Toshiba), and WD Purple runs at 5400 or 5640 RPM depending on the model (WD). If you want Windows to start and run faster, put it on an SSD. Even a 7200 RPM hard disk is far slower than an SSD for that, so use the hard disk for storage.
4. CMR or SMR, and NAS drives
CMR (conventional recording) writes data tracks side by side. SMR (shingled recording) overlaps them slightly, like roof tiles, to fit more on each platter. Toshiba uses drive-managed SMR in the DT02 surveillance drives on this page and designs them for 24/7 multi-camera recording (Toshiba). If the recording type matters for your setup, look it up on the maker's spec sheet before you buy.
The difference matters most in a NAS, where disks often run together in RAID. Western Digital says CMR gives more consistent write performance and handles RAID rebuilds better than drive-managed SMR (WD). The drives on this page are surveillance and desktop models, so for a home or office NAS, choose a drive its maker sells for NAS use.
5. Work out how much CCTV recording you need
Recorders are usually set to record over the oldest footage once the disk is full, so the disk size decides how many days back you can look. Find each camera's bitrate in the recorder's settings and add them up.
For example, four cameras at 2 Mbps each make 8 Mbps. That's 1MB every second, or about 86GB a day. A 1TB disk then holds about 11 days, 2TB about 23 days and 4TB about 46 days. Higher resolution or more cameras fill it faster. Also check the recorder's spec sheet for how many disks it takes and the largest size it supports. For cameras, see CCTV camera price in Nepal.
Buying from Quality Computer
Every hard disk comes with a VAT bill. We usually deliver all over Nepal in 2 to 5 days, and delivery is free within 15 km on products over Rs 5,000. You can also visit our store on Bhadrapur Road, Birtamode, or call 023-530150 or 9863609150.
More reading: Choosing a CCTV system and its hard disk · External hard disk price in Nepal · SSD price in Nepal
Hard disk FAQ
Which hard disk is best for CCTV?
A surveillance drive, made for recording 24/7. On this page that means the WD Purple, Seagate surveillance and Toshiba surveillance drives, from 1TB to 8TB. Pick the size from how many cameras you have and how many days of footage you want to keep.
How many days of recording will a 2TB hard disk hold?
It depends on the number of cameras and their bitrate. Four cameras at 2 Mbps each write about 86GB a day, so 2TB lasts about 23 days before the recorder starts recording over old footage. Eight cameras at the same bitrate halve that.
Why does my 1TB hard disk show 931GB?
Drive makers count 1TB as 1,000,000,000,000 bytes. Windows counts in units of 1,024, so the same disk shows as about 931GB. Nothing is missing. A 2TB disk shows about 1.82TB and a 4TB disk about 3.64TB.
Will these hard disks fit my laptop?
Check the size on the product page first. The WD Purple and Toshiba drives here are 3.5-inch, which fits desktops and recorders but not laptops, since laptops take 2.5-inch drives. For a laptop, an SSD is the better upgrade anyway.
Which hard disk brands do you sell?
Seagate, Toshiba and WD hard disks, plus an OSCOO SSD. Every price on this page is our current website price.
Do you deliver hard disks outside Birtamode?
Yes. We usually deliver all over Nepal in 2 to 5 days, and delivery is free within 15 km on products over Rs 5,000.
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