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You are here: MacNN Forums > Enthusiast Zone > Art & Graphic Design > 8 MB buffer: how much does it help on a hard drive?

8 MB buffer: how much does it help on a hard drive?
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sledsbehave
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Jul 22, 2005, 01:55 AM
 
i just noticed my main video hard drive doesn't seem to have a buffer at all.

how much would it help to have an 8MB buffer on a hard drive when capturing vhs through my canopus advc-100?

will this help with dropped frames?
as ever,
sonny
     
OogaBooga
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Jul 22, 2005, 09:46 AM
 
All hard disks made within the last 15 or so years have a buffer.

When doing video work, the hard disk speed is very important. I'd say a couple of Maxtor 300gb 16mb buffer drives in RAID 0 would be fast enough for most video.

Usually, a larger buffer means faster random small file reads/writes while a faster RPM means faster sustained reads/writes.

Now only if the Raptors had a 16mb cache...
     
sledsbehave  (op)
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Jul 22, 2005, 11:50 AM
 
Originally Posted by OogaBooga
All hard disks made within the last 15 or so years have a buffer.

When doing video work, the hard disk speed is very important. I'd say a couple of Maxtor 300gb 16mb buffer drives in RAID 0 would be fast enough for most video.

Usually, a larger buffer means faster random small file reads/writes while a faster RPM means faster sustained reads/writes.

Now only if the Raptors had a 16mb cache...
so basically with large files, such as capturing video, it will make no difference?

i realize a faster RPM is important and my system won't work with the drive you suggested.

what i'm looking at his a western digital 8MB buffer 7200RPM 160GB.

is there a brand that is just made for video caputure?

it would have to be IDE and i'm using a gigabit G4 so size is limited to 128GB.

i currently have a seagate 60GB 7200rpm, and i would be replacing the original IBM 20GB drive.
as ever,
sonny
     
brother337
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Jul 22, 2005, 06:57 PM
 
Originally Posted by sledsbehave
so basically with large files, such as capturing video, it will make no difference?

i realize a faster RPM is important and my system won't work with the drive you suggested.

what i'm looking at his a western digital 8MB buffer 7200RPM 160GB.

is there a brand that is just made for video caputure?

it would have to be IDE and i'm using a gigabit G4 so size is limited to 128GB.

i currently have a seagate 60GB 7200rpm, and i would be replacing the original IBM 20GB drive.
The 8meg buffer does help, but you really shouldn't have any problems with any 7200 rpm drive (even those with a 2mb buffer) if you're only working with DV. You can capture and edit video quite capably on a 4200 rpm drive so any 7200 rpm drive is just going to work better than that.

That being said, I have the 80 gig Western Digital drive with the 8meg buffer and it works fantastically for video.
15" MacBook Pro Core2Duo 2.33
160gig PMR HD / 2 GB RAM
     
   
 
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