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Raid 0 Help

post #1 of 9
Thread Starter 
I've just bought two 1tb samsung f3's and I want to set them up as raid 0, but I have some questions.

Firstly.. I have an existing 500gb drive that needs to be backed up or transferred onto the samsungs.. what's the best way to do this?

I don't want to use the 500gb in raid as that will limit my size to 500gb per drive I believe.

So in my situation what is the best way to do this?
post #2 of 9
If you put all 3 in RAID 0 your total size will be 2.5TB BUT your crash risk is increased 3 times the average failure rate of HDD's.
post #3 of 9
Thread Starter 
Quote:
Originally Posted by Paratrooper1n0 View Post
If you put all 3 in RAID 0 your total size will be 2.5TB BUT your crash risk is increased 3 times the average failure rate of HDD's.
Everything I have read says that raid 0 takes the capacity of the smallest drive (so 500gb) then uses that for all drives. That would give me 1.5tb vs 2tb, but faster speeds.

But really what I need to know is how do I even setup raid 0.. It seems like It needs to be done on a fresh install of windows.

My understanding so far is this.

1. Go into bios and set Sata to raid.
2. Load up windows and install raid drivers (where do i get these from?)
3. Install windows...
4. ????
5. Profit
post #4 of 9
Quote:
Originally Posted by eggs2see View Post
Everything I have read says that raid 0 takes the capacity of the smallest drive (so 500gb) then uses that for all drives. That would give me 1.5tb vs 2tb, but faster speeds.

But really what I need to know is how do I even setup raid 0.. It seems like It needs to be done on a fresh install of windows.

My understanding so far is this.

1. Go into bios and set Sata to raid.
2. Load up windows and install raid drivers (where do i get these from?)
3. Install windows...
4. ????
5. Profit
You would get the RAID drivers from the ASUS website in your case since you have an ASUS mobo.
post #5 of 9
Thread Starter 
Yup got the drivers now, thanks. Can anyone help with my original questions though? Can I have three hdd's installed but only use 2 in raid 0?
post #6 of 9
Yes, you can have 3 HDD installed and have only a specific number in RAID. That's how people have an SSD as their boot drive and other drives in RAID.
post #7 of 9
Thread Starter 
Ok I have setup my drives in raid 0 through bios, I then reinstalled windows, however I wasn't able to install the raid drivers I downloaded as it said they were unsigned? I did some benchmarks using hdtune, and the results were all over the place to say the least.. max speed about 200mbs min 30mbs and would fluctuate between the two.

HEEEELP.
post #8 of 9
Quote:
Originally Posted by Paratrooper1n0 View Post
If you put all 3 in RAID 0 your total size will be 2.5TB BUT your crash risk is increased 3 times the average failure rate of HDD's.
Incorrect. It's 3x the smallest capacity.

Quote:
Originally Posted by eggs2see View Post
Everything I have read says that raid 0 takes the capacity of the smallest drive (so 500gb) then uses that for all drives. That would give me 1.5tb vs 2tb, but faster speeds.
Correct. (Mostly)

Performance wise, it's actually 3x the slowest drive. So if you have two drives that max at 150MB/sec, and one that maxes at 100MB/sec, once you factor in overhead, 2x150MB/sec is faster than 3x100MB/sec.

Performance acts this way because the drives have to work together. If software requests 2MB of data, that data has to come from stripes on each of those drives, so even though the faster drives finish miliseconds faster, they then sit idle while waiting for the slower one to catch up. Once the 2MB reaches the software, it asks the array for the next 2MB, etc.

Quote:
Originally Posted by eggs2see View Post
I did some benchmarks using hdtune, and the results were all over the place to say the least.. max speed about 200mbs min 30mbs and would fluctuate between the two.

HEEEELP.
Post a screenshot.

Also, what RAID drivers did you download?
     
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CPUMotherboardGraphicsRAM
FX-8350 @ 4.6ghz 1.425v Sabertooth 990FX Zotac GTX 1070 Amp! 32GB (4x8GB) Kingston Fury 1866mhz CL10 1T 1.5v 
Hard DriveHard DriveHard DriveHard Drive
Hitachi 2TB - HDS723020BLA64 Crucial M500 960GB - CT960M500SSD1 WD 4TB Black - WD4001FAEX WD 4TB Black - WD4001FAEX 
Hard DriveHard DriveHard DriveHard Drive
Seagate 2TB - ST2000DM001 WD 640GB Black - WD6401AALS Seagate 6TB - ST6000DM001 Micron M500 - MTFDDAK480MAV 
Optical DriveOptical DriveOptical DriveOptical Drive
Pioneer DVR-115DBK Samsung SH-S243D/BEBE LG GH22NS90 Lite-On EBAU108 External DVD 
CoolingCoolingCoolingOS
Noctua NH-D15 Fractal Design 140mm Fan - FD-FAN-140 Fractal Design 120mm Fan - FD-FAN-120 Windows 7 
OSMonitorMonitorKeyboard
Ubuntu 14.04 LTS Samsung 2343BWX 23" (2048x1152) BenQ GW2765HT 27" IPS LCD Monitor (2560x1440) Genius Keyboard KB-G235 PA 
PowerCaseMouseMouse Pad
Seasonic Platinum 1000w PSU - SS-1000XP Fractal Design Define R5 Steelseries Rival 6500 dcpi Mousepad + Desk 
AudioAudioOtherOther
Onboard Realtek® ALC 892 Cyber Acoustics CA-2992 2.0 Speakers Razer Krait 1600 DPI nGear G-C1601 Card Reader 
OtherOther
Pisen Card Reader Gigabyte M7 Thor 
CPUMotherboardGraphicsRAM
VIA Eden C7 1200mhz Jetway J7F4K1G2ES-LF VIA Onboard 512MB PC2-4200 
Hard DriveOptical DriveCoolingOS
A-Data FlashDrive None Fanless Linux 
MonitorKeyboardPowerCase
Headless None 65w Power Brick Antec ISK300-65 
MouseAudio
None Onboard VIA 
CPUMotherboardGraphicsRAM
Barton XP-M 2400+ FJQ4C Asus A7N8X-E Deluxe 256MB BFG 7800GS OC 2x512MB Samsung PC3200 
Hard DriveOSMonitorKeyboard
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post #9 of 9
As Kramy suggests, the older/smaller drive likely has different performance characteristics from the the new pair, so it would be less than ideal to RAID with.

Also, I never recommend putting all of one's drives in the same array, as there are many cases where separate drives/arrays will be considerably faster than just expanding the array. A RAID 0, for all it's speed advantages, is still generally limited to doing one thing at a time, and any activity on it will slow down other activities. Keeping stuff on entirely separate drives is usually much faster in multitasking scenarios.

You should have quite a bit of flexibility with how your RAID is configured. I have six hard drives installed (in my primary system), and have two RAID 0s on the first three (because I haven't figured out a good way to manually align/offset GPT disks; also these three disk perform similarly while the rest of my 1TB drives vary from them), while the others are are stand alone drives. We have different chipsets/drivers but you should have somewhat similar flexibility.
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Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
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