Sata 2 HDD's Speed

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Vegh Laszlo

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Jun 13, 2013
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Good day , i have a 500GB WD Caviar Blue 7200Rpm and 16 MB cache , and a Samsung SpinPoint 160GB 7200RPM 8MB Cache .

The questions are as following :
1. If i put it into RAID it would be slow becouse of the Samsung HDD or it would boost speed ?
2. If i use them without raid would the Samsung slow down the WD or both HDD-s would work on their normal speed ?
 
Solution
manofchalk
1. Depends what level of RAID as to what will happen, but in general both drives will be lowered to the capacity and performance of the slowest drive. Best case scenario, RAID 0 will get you 320GB of capacity at double the performance of the slowest drive (The Samsung most likely).

2. No, in a JBOD array (Just a Bunch Of Disks) they are independant from each other, ones performance wont impact the other.
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manofchalk

manofchalk

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May 11, 2012
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1. Depends what level of RAID as to what will happen, but in general both drives will be lowered to the capacity and performance of the slowest drive. Best case scenario, RAID 0 will get you 320GB of capacity at double the performance of the slowest drive (The Samsung most likely).

2. No, in a JBOD array (Just a Bunch Of Disks) they are independant from each other, ones performance wont impact the other.
 
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Solution
Dereck47

Dereck47

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Jan 20, 2011
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A RAID-0 array's Read/Write performance is based upon the drive in the array with the slowest Read/Write speeds.
So your RAID-0 array's Read/Write performance would be based upon the Read/Write speed of the Samsung SpinPoint drive.

A RAID-0 array's total capacity is based upon the drive in the array with the smallest capacity.
So if you RAID-0 a 500GB drive and a 160GB drive, then your array's total capacity (before formatting) will be 320GB (160 x 2).

If you use the drives without RAID then each drive will Read/Write at their advertised speeds.
 
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