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Polizei

Are WD Raptor Hard Drives Really Worth It?

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Yeah, I was reading about RAID here and it said that RAID 5 was fast. Ive never seen benchmarks of any, so I havent really taken that info to heart, so.

 

Will there be much difference in a RAID 0 array with 2x 80GB drives if the drives had 8MB or 16MB of cache? Would the RAID itself make up for the less cache?

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Yeah, I was reading about RAID here and it said that RAID 5 was fast. Ive never seen benchmarks of any, so I havent really taken that info to heart, so.

 

Will there be much difference in a RAID 0 array with 2x 80GB drives if the drives had 8MB or 16MB of cache? Would the RAID itself make up for the less cache?

 

RAID-5 isn't as fast as RAID-0 since RAID-5 requires parity and RAID-0 has no parity, no fault-tolerance.

 

to get fast RAID-5, you need that expensive controller card and expensive/fast hard drives (15k+ SCSI preferred)

 

onboard controllers like on your motherboard do excellent RAID-0 and RAID-1

 

16MB cache is better than 8MB, but in RAID-0 both are fast enough that you won't care either way ;)

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I wouldnt notice much difference if I had 8MB or 16MB cache for these 80GB RAID 0 drives? Alrighty... now I just have to suck it up and buy them.

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cough. 2x sataii 80GB HDDs. about +- 100$

and a larger storage drive. eg 250,320,400,500

get performance whilst still having a storage drive.

 

when i say this i mean.. everything on the raid0 is volatile. its garbage.

windows, programs, porn, junk. not worth saving

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cough. 2x sataii 80GB HDDs. about +- 100$

and a larger storage drive. eg 250,320,400,500

get performance whilst still having a storage drive.

 

when i say this i mean.. everything on the raid0 is volatile. its garbage.

windows, programs, porn, junk. not worth saving

 

 

http://www.newegg.com/Product/ProductList....tk=&srchInDesc=

 

any of these will work, get 2 or 3 of these, raid 0 them, get a cheap 250 gig or larger drive use as a storage/backup

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Im going to use the 250GB I have now strictly as a storage drive and probably buy 2x 80GB drives for a RAID 0 array sometime around or after Thanksgiving... maybe Ill hit a sale.

 

Yes, I would use the 80GB array for Windows, programs and probably things I rip from DVD or CD so I can do it quicker. Ill then transfer the ripped media to my storage drive.

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I wouldnt notice much difference if I had 8MB or 16MB cache for these 80GB RAID 0 drives? Alrighty... now I just have to suck it up and buy them.

 

looky my sig... 3x80GB Hitachi SATA II drives...they cost me all of about $42/ea @ newegg...I think a Raptor still costs...about the same as my 3 drives?

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I don't intend to hijack and appologize if this constitutes as a hijack.

I brought this up in post 2 but still do not see any confirmation.

If you are ripping music or burning cds, is not your optical drive responsible for most of the time it takes?

Meaning, it does not matter what kind of hard drive, the time it takes will depend on the read and write speeds of your opticals.

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The time doesnt matter, its the fact that reading and writing to my current hard drive slows down incredibly. Reading and writing the simplest things like Word documents take forever.

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I don't intend to hijack and appologize if this constitutes as a hijack.

I brought this up in post 2 but still do not see any confirmation.

If you are ripping music or burning cds, is not your optical drive responsible for most of the time it takes?

Meaning, it does not matter what kind of hard drive, the time it takes will depend on the read and write speeds of your opticals.

 

DVD ripping is either a one or two step process, depending on what you want. The first step is decrypting the audio/video streams and copying those decrypted streams to your hard drive. This requires software that may or may not be legal in your jurisdiction (while this has not been tested in court to my knowledge, most everyone agrees that doing this would violate the DMCA in the United States, for example). The program that I've seen used most often is DVD Decryptor. This process is bottlenecked at the optical drive. It takes me about 5-10 minutes to decrypt and copy a 40 minute episode of 24, depending on where it is on the DVD (data on the outer part of the DVD is read faster). Once you've done this, with a properly configured media app, you can watch those decrypted files. The quality is exactly the same as if you were watching it from the DVD. Features like closed captioning and alternate audio tracks (other languages, director's comments, etc.) are preserved just as they are on the DVD. Anti-features like copyright warnings and forced previews are not included. The downside is that these files take up a large amount of space (an episode of 24 runs about 2GB IIRC).

 

At this point I will CMA and say that I do this only to DVDs I own. I do not share them over any file sharing network. I do it to skip previews, FBI warnings, menus, and crap like that. I also do it so I don't have to have the disc anymore, freeing up my optical drives for important discs, like games.

 

The second step is optional. If you are OK with the big file and don't care that you can't play it on things like 5G iPods, then you're done and can skip this step. In my expereince, this step is CPU bound more so than I/O bound. I use two programs for encoding. One is Auto Gordian Knot, which is an easier to use cousin of Gordian Knot. Both GK and AutoGK take in decrypted DVD files, a bunch of options chosen by the user, and spit out avi, mpg or whatever you asked for. The output files are significantly smaller than the source files. The other program I use is called Videora. It does basically the same thing as AutoGK except that it spits out an mp4 file that's ready to be viewed on 5G iPods.

 

Here is why I think it's CPU bound. Before this past summer, I had a Venice (single core) 3200 OC'ed to about 2500MHz (I don't remember exactly where I had it) and a single hard drive. In July I upgraded to an Opteron 165 (dual core), OC'ed to 2700 (300x9), and the RAID system described in my sig. Videora is a single threaded app. Before the upgrade, it took about 20 minutes to Videora-encode a 40 minute episode of 24. After the upgrade, with the source and destination files on the RAID0 array, it still takes about 20 minutes to do the same episode (though, obviously, with the dual core processor I can run 2 instances of Videora, each working on a seperate movie on a seperate core). However, AutoGK is multithreaded. A single instance of AutoGK will max out both cores on a dual core machine. Before the upgrade, AutoGK would take about 90 minutes to encode a 40 minute episode of 24. After the upgrade, AutoGK takes about 45 minutes to do the same thing.

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Anything I do with optical drives is slower than a system HDD, or even a HDD used via USB. If you want speed, skip using the optical drives all together. If you need something you can take from computer to computer, consider a small USB HD such as this 6gb drive or even something a little larger for roughly the same money, such as these 60gb USB hard drives

 

That said, here are a couple of links to screen shots from HDD Tach tests from my Raptor and WD 250mb drives, even tho it sounds like you will go with RAID, it shows that the Raptors aren’t much faster, and in normal use, I’m not sure I can tell the difference between the two drives.

 

The Raptor http://ct.pbase.com/o4/64/209564/1/6608058...tach_raptor.jpg

 

The WD 250gb http://ct.pbase.com/o4/64/209564/1/6608058...ach_wd250mb.jpg

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