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2.5 inch 2TB hard disc drive for DVR

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  • 13-11-2017 3:07pm
    #1
    king2
    Registered Users Posts: 404 ✭✭


    I have a Sannce CCTV system on the way which needs a 2TB 2.5 inch hard drive. I could not find any online that were specified as being for DVRs. Is it important to get a Surveillance HDD or will any type work?


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    #2
    altor
    Registered Users Posts: 11,715 ✭✭✭✭altor


    king2 wrote: »
    I have a Sannce CCTV system on the way which needs a 2TB 2.5 inch hard drive. I could not find any online that were specified as being for DVRs. Is it important to get a Surveillance HDD or will any type work?

    Yes it is important to get a Surveillance HDD.
    Standard HDD are designed to work in desktops which are designed to be used during the day. Surveillance HDD are designed to be used 24hr a day. Yes both can fail but its designed to do the job in a DVR as opposed to a standard drive.

    www.altor.ie



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    #3
    NIMAN
    Registered Users Posts: 33,646 ✭✭✭✭NIMAN


    Something like the Seagate Skyhawk is designed for this purpose.


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    #4
    king2
    Registered Users Posts: 404 ✭✭king2


    Seagate and western digital have Hard Drives specifically for surveillance but only 3.5 inch. Cannot find any 2.5 inch.


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    #5
    altor
    Registered Users Posts: 11,715 ✭✭✭✭altor


    NIMAN wrote: »
    Something like the Seagate Skyhawk is designed for this purpose.

    Would a SDD do in a DVR, havent used one but cant find a 2.5 surveillance HDD?

    www.altor.ie



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    #6
    altor
    Registered Users Posts: 11,715 ✭✭✭✭altor


    This is not to expensive compared to others.

    www.altor.ie



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    #7
    king2
    Registered Users Posts: 404 ✭✭king2


    altor wrote: »
    This is not to expensive compared to others.

    Thats not an ssd though its a sshd, some sort of hybrid....

    https://www.seagate.com/gb/en/internal-hard-drives/hdd/firecuda/


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    #8
    NIMAN
    Registered Users Posts: 33,646 ✭✭✭✭NIMAN


    I think a SSD wouldn't be suitable.

    Their major failure mode is too many writes/re-writes. compared to HDD which aren;t affected by this.

    So if you are constantly writing data 24/7 I think might be best sticking to a HDD.

    Could you not just use a 1tb, it just means it will end up writing over the disk earlier, but 1tb should allow plenty of days recording before it needs to do this.


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    #9
    derekbro
    Registered Users Posts: 154 ✭✭derekbro


    Are you sure it needs a 2.5 inch HDD? I got a Sannce system last year and it used a 3.5 inch hdd, I would think its unusual for the system to require a 2.5 inch HDD.


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    #10
    king2
    Registered Users Posts: 404 ✭✭king2


    NIMAN wrote: »
    I think a SSD wouldn't be suitable.

    Their major failure mode is too many writes/re-writes. compared to HDD which aren;t affected by this.

    So if you are constantly writing data 24/7 I think might be best sticking to a HDD.

    Could you not just use a 1tb, it just means it will end up writing over the disk earlier, but 1tb should allow plenty of days recording before it needs to do this.

    It has 4 1920x1080 hd cameras, I think 1TB would only give you 5 to 7 days recording of full hd


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    #11
    king2
    Registered Users Posts: 404 ✭✭king2


    derekbro wrote: »
    Are you sure it needs a 2.5 inch HDD? I got a Sannce system last year and it used a 3.5 inch hdd, I would think its unusual for the system to require a 2.5 inch HDD.

    https://www.aliexpress.com/item/SANNCE-Full-HD-1080P-4CH-Wireless-NVR-CCTV-Security-System-2-0MP-IP-Camera-1080P-Wifi/32828990655.html

    Yup, needs 2.5inch unfortunately


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    #12
    NIMAN
    Registered Users Posts: 33,646 ✭✭✭✭NIMAN


    derekbro wrote: »
    Are you sure it needs a 2.5 inch HDD? I got a Sannce system last year and it used a 3.5 inch hdd, I would think its unusual for the system to require a 2.5 inch HDD.

    This seems right.

    If you search for hdds for surveillance, you can't see to get a 2.5" anywhere. They all come up as 3.5"


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    #13
    king2
    Registered Users Posts: 404 ✭✭king2


    NIMAN wrote: »
    This seems right.

    If you search for hdds for surveillance, you can't see to get a 2.5" anywhere. They all come up as 3.5"

    The Western Digital 1TB that Sugarman linked to above seems to be the only one available


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    #14
    king2
    Registered Users Posts: 404 ✭✭king2


    sugarman wrote: »
    Wester Digital do, but only in 1TB or smaller. See here.

    If you want 2TB, id suggest a 2.5 NAS drive. They are almost identical to surveillance drives, designed to be on and written to 24/7 only theres some small differences in firmware to optimize the tasks.

    Have You used NAS drives in DVRs? Is there a greater risk of incompatibility than You might have with a standard drive?


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    #15
    king2
    Registered Users Posts: 404 ✭✭king2


    sugarman wrote: »
    I worked in a company that built DVRs and used NAS drives as a cost cutting measure.

    They're pretty much the same as Surveillance drives mechanically, designed to run 24/7 & have longer warranties. The only real difference is their firmware to optimise the tasks of each.

    The difference between both NAS & Surveillance compared to a "Standard" drive is, mechanically they're just not designed to run 24/7 and more suspect to failure over time. They also usually have shorter warranty.

    They're all compatible drives, and you won't find any issues there. Youre just really paying a premium for probable life longevity & longer warranty.

    I've know plenty of people who use standard drives just fine. It's even debatable if it's
    cheaper to buy standard drives and then replace them IF they fail. Its really down to you and how you value your data.

    Thanks for the info, might just go with a Standard Drive, Do you know where online I might get a 2tb nas 2.5inch? seem to be scarce also


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