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Thread: Hard drives

  1. #1
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    Hard drives

    I am thinking of slaving two hig gig hard drives together and recording video from a surveillance camera system using Pinnacle's Studio 7 (similar to a DVR). Currently, we are using two timelapse VCR's to record the images and the pictures and, well they just <img src=/w3timages/censored.gif alt=censored border=0>.

    Since the disk would be in use almost constantly, how many times or what length of time could I expect the hard drives to last?

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    Plutonium Lounger Leif's Avatar
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    Re: Hard drives

    Years. And if you never power down (as opposed to rebooting) even longer. This is just what a file server would be doing.
    What do you mean by slaving them together?

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    Re: Hard drives

    <<I am thinking of slaving two hig gig hard drives together >>

    As you probably figured, there is no such thing as "hig gig hard drives", well...maybe in southern Lousiana. <img src=/S/crossfingers.gif border=0 alt=crossfingers width=17 height=16>

    As far as the two drives, the only way I could figure to get enough storage was to make one drive the master and one the slave. Wish I could serial 4 or 5 100 gigs together and record across all of them.

    Would a server be better at this? Most DVR I have priced are between 3 and 10k (US).

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    Plutonium Lounger Leif's Avatar
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    Re: Hard drives

    I quite agree about the quality of usual time-lapse VCR's and will be interested to see how you get on.
    A server may be a better bet as it may already have the architure for multiple drives, and I would suggest using fast SCSII drives. I would also expect that you may need to have the machine dedicated to that job alone. I'm going to takle a look at the software you suggested and see what else is out there - you've got me thinking . . .

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    Re: Hard drives

    Hi
    Have you thought of investing in a RAID motherboard and 'striping' your drives? This enables your system to see two or more drives as one big one.

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    Re: Hard drives

    Merc, can you clue me in as to the difference in a Raid motherboard and any other type. Have seen the Raid motherboards and they seem rather expensive. Is that the only advantage to a Raid board, striping the drives?

    I would rather get about 4 or 5 big drives and record for a whole week.

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    Re: Hard drives

    Studio 7 is probably not the right software for purely getting the signal into the system. I bought Studio 7 to pull stills from an analog tape of an alleged "accident".

    I was hoping to build something similar to a DVR for somewhat less than the going rate! I figure I can probably put one together for maybe $1500 US.

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    Re: Hard drives

    The property I work for has multiple surveillance cameras recording to a dedicated Win98 PC with multiple 60Gb drives. It all lock away in our security office but I'll get the details if you're interested.
    Granville

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    Re: Hard drives

    Hi
    Basically chip sets and sockets. The mobos I've had experience of were not that much more expensive than other types. With RAID you get other options as well as striping, such as the safety technique known as mirroring. Since RAID (now) means Redundant Array of Independent Drives, you get the drift. If you're serious about meshing HDs together, I reckon this would be the way to go. You should perhaps, read upon it first. here might be a good place to get the basics.

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    Re: Hard drives

    I would be very interested as this is exactly what I intend to do.

    Thanks,

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    Re: Hard drives

    In brief we are running a P3 866MHz with 128Mb RAM Octek Pro Rhino 815ACP motherboard and Windows98.

    3 x 75Gb disk drives each with 4 partitions. 23 cameras with capability of adding 2 more. Software is Bankeyes, not sure where this originates from and the limited doco doesn't tell.

    Why the drives are partitioned, I guess, has more to do with Win98 limits that the software.

    Hope this proves helpful.
    Granville

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    Plutonium Lounger Leif's Avatar
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    Re: Hard drives

    Found it here at OzVision - thanks for the tip.

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    Re: Hard drives

    Thanks, Leif. As I posted elsewhere I had an email server crash yesterday and it didn't occur to me to do a search for the product. <img src=/S/blush.gif border=0 alt=blush width=15 height=15>
    Granville

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    Re: Hard drives

    Yes, thanks. From looking at the site, it would appear that the system also has some hardware which enables the camera-to-pc input. This has been the hardest for me to figure out - how to input the signal.

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    Re: Hard drives

    Each RAID level presents a different balance of redundancy and performance. Striping data across multiple drives can improve performance, while storing parity information provides for fault tolerance. You can mix and match these options. Dell has a good description on its site.

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