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WD Raptor 150Gb VS 2XWD Raptor 74 GB RAID 0 ?

Tags:
  • Hard Drives
  • Western Digital
  • Wd Raptor
  • Cache
  • Raptor
  • NAS / RAID
  • Storage
  • Product
Last response: in Storage
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August 7, 2006 11:10:03 AM

Hi there!
Please help me decide:

[code:1:58e4cdb5f1]1X Western Digital Raptor WD1500AD, SATA1/NCQ,150GB,16MB cache ----VS---- 2X Western Digital Raptor WD360, SATA1,36GB,8MB cache -in RAID 0[/code:1:58e4cdb5f1]

[code:1:58e4cdb5f1]1X Western Digital Raptor WD1500AD, SATA1/NCQ,150GB,16MB cache ----VS---- 2X Western Digital Raptor WD740GD, SATA1/TCQ,74GB,8MB cache -in RAID 0[/code:1:58e4cdb5f1]

Which one is better?
Thank you!

More about : raptor 150gb 2xwd raptor raid

August 7, 2006 7:25:08 PM

the 2 raptors in raid will blow it away. either set. striped raptors get high numbers.
August 7, 2006 11:19:58 PM

yep... either set of raptor's in RAID 0 will own. The 150GB raptors are slightly faster than the 74GB ones though.
Related resources
August 7, 2006 11:50:33 PM

You didn't say how you will use this rig.
If you are after absolute speed, go for the 2x Raid0.
If you look at future upgradeability, heat, noise,
simplicity, etc. the single drive is best. :) 
August 7, 2006 11:59:56 PM

Here are my numbers for the 2x74GB dealie (note this is on a true hardware controller, the 3ware 9500S)
[code:1:9350d141da]the-uberbeast # tw_cli info

Ctl Model Ports Drives Units NotOpt RRate VRate BBU
------------------------------------------------------------------------
c0 9500S-4LP 4 2 1 0 4 4 -

the-uberbeast # tw_cli info c0


Unit UnitType Status %Cmpl Stripe Size(GB) Cache AVerify IgnECC
------------------------------------------------------------------------------
u0 RAID-0 OK - 64K 130.365 ON OFF -

Port Status Unit Size Blocks Serial
---------------------------------------------------------------
p0 NOT-PRESENT - - - -
p1 NOT-PRESENT - - - -
p2 OK u0 69.25 GB 145226112 WD-WMAKE2276237
p3 OK u0 69.25 GB 145226112 WD-WMAKE2277024

the-uberbeast # hdparm -Tt /dev/sda

/dev/sda:
Timing cached reads: 3855 MB in 2.00 seconds = 1927.52 MB/sec << From Cache
Timing buffered disk reads: 403 MB in 3.00 seconds = 134.33 MB/sec << From Disk[/code:1:9350d141da]
August 8, 2006 2:12:56 PM

Thank you guys, you rock!
You reely helped me.
Though RAID0 rules, i think i`ll go for the 150GB ...anyway, i have to wait 1 week untill my money comes...so i`ll chew this thought some more:) 

I will use the raptor for windows install+program files+scratch, and my old WD caviar for saving data.
Thank you!
August 8, 2006 9:14:27 PM

You can't really go wrong with a 10k drive, it's a little more pricey but (for enthusiasts) the decreased latency and slightly higher transfer rate is worth it.
August 9, 2006 7:10:29 AM

Yeah, just that i hope the price will stay as it is, i don`t want it to happen like it did with my AMDx2 4400+ ....I bought it 4 months ago and now the price is half :evil: 
August 9, 2006 7:29:04 AM

Yeah just like everyone said get two 74Gb raptor for raid 0 and it will smoke a single 150Gb raptor. I got that setup and it's really nice being able to download window and games faster. :wink:
August 9, 2006 7:31:17 AM

Quote:
yep... either set of raptor's in RAID 0 will own. The 150GB raptors are slightly faster than the 74GB ones though.


What evidence are you basing the statement that 150GB raptors are faster than 74GB raptors? I've been curious about that issue myself, but haven't been able to find any evidence one way or the other.
August 9, 2006 7:57:19 AM

Quote:
yep... either set of raptor's in RAID 0 will own. The 150GB raptors are slightly faster than the 74GB ones though.


What evidence are you basing the statement that 150GB raptors are faster than 74GB raptors? I've been curious about that issue myself, but haven't been able to find any evidence one way or the other.



[code:1:34388ba159] http://www23.tomshardware.com/storage.html?modelx=33&mo...[/code:1:34388ba159]
See the charts:) 
But now there is a 74 GB raptor with 16 MB cache... i dunno with that one:) [/quote]
August 9, 2006 3:44:56 PM

Quote:
yep... either set of raptor's in RAID 0 will own. The 150GB raptors are slightly faster than the 74GB ones though.


What evidence are you basing the statement that 150GB raptors are faster than 74GB raptors? I've been curious about that issue myself, but haven't been able to find any evidence one way or the other.



[code:1:3d1813e055] http://www23.tomshardware.com/storage.html?modelx=33&mo...[/code:1:3d1813e055]
See the charts:) 
But now there is a 74 GB raptor with 16 MB cache... i dunno with that one:) [/quote]

But as you say, you are comparing the new with the old model there. The old model not only has less cache, but it also has lower areal density, which is known to lower performance. In no way is this representative of the relative performance of the current 74GB and 150GB models.

If this is the evidence that the above statement was based on, the statement is simply wrong.
August 11, 2006 11:00:42 AM

The statement is not wrong : i was thinking of the old 74Gb 8 mb cache in raid 0 vs new 150gb 16 mb cache.Because of the price:) 
!