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Laptop RAID and External RAID

post #1 of 7
Thread Starter 
I got my new laptop and i need some advise on what I should do.

It has 2x 500GB HDD. Stock it comes RAID 0. \

i want to know if I should keep it that way or do a RAID 1 or just not use RAID.

Iv never had a HDD fail on me but idk about laptop hard drives.

And if I keep RAID 0 can I take my 1.5TB and put it in an external encloser can I do a RAID 1 with my RAID 0?

Kinda like a RAID 0 + 1 only using one Hard Drive for the 1 Part.

Any Ideas? Thanks!

Ill add a Pic.

Would I be able to use the Extra 0.38 TB After all this on the 1.5 TB?

Bonus Question. Why does a 1TB HDD format to 931GB? Why can't they make a 1.1TB HDD that Formats to 1TB? Is that so hard??

338
Edited by ChatGhost - 5/13/12 at 5:03pm
post #2 of 7
what you could do is keep the 2 x 500GB drives in RAID 0 so you get abit under 1TB of usable space. then use something like Robocoy or QuickFileSync to backup the RAID 0 array to your 1.5TB drive.. as you said put it in a USB external encloser...
http://www.overclock.net/t/1125994/seans-data-backup-guide smile.gif
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post #3 of 7
Thread Starter 
Ill try that when I get my Encloser OR (I had the bright Idea during school to hot wire a PSU so it runs with out a computer and try and use the Esata port on my laptop, but, sadly, they are not the same.)

Ill have to buy a Wire. IDK.

What do you guys think?
post #4 of 7
Quote:
Originally Posted by ChatGhost View Post

Bonus Question. Why does a 1TB HDD format to 931GB? Why can't they make a 1.1TB HDD that Formats to 1TB? Is that so hard??
That's more of a Windows issue. Rather than dividing x bytes (lets say 500,000,000,000, since you have two 500GB HDDs) by 1000 a few times to report 500GB, it instead divides by 1024 a few times. Every time you jump prefixes (MB to GB to TB and beyond) there's another 2.4% discrepancy in what you see.

Most Linux distros corrected this issue years ago, and report true metric capacities. (A good call, since most of what we do is now internet based, and thus is completely metric) OSX also flipped to Metric. Windows is the lone holdout. tongue.gif

Hmm... if you want to access your HDD from a laptop without any external power source, you probably want a 2.5" external.
     
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post #5 of 7
Thread Starter 
The 1.5TB HDD is a 3.5". I just want to do this as cheap as possible.

So...

500,000,000,000 B....../ 1,000
500,000,000 KB.........../ 1,000
500,000 MB.................../ 1,000
500 GB

500,000,000,000 B...... / 1,024
488,281,250 KB............/ 1,024
476,837 MB..................../ 1,024
~ 465 GB


465 + 465 = 930 GB

And my computer reads:

Drum Roll. drum.gif

931 GB

I think the Extra 1GB is due to Rounding.
Edited by ChatGhost - 5/15/12 at 4:51pm
post #6 of 7
Quote:
Originally Posted by ChatGhost View Post

The 1.5TB HDD is a 3.5". I just want to do this as cheap as possible.

So...

500,000,000,000 B....../ 1,000
500,000,000 KB.........../ 1,000
500,000 MB.................../ 1,000
500 GB

500,000,000,000 B...... / 1,024
488,281,250 KB............/ 1,024
476,837 MB..................../ 1,024
~ 465 GB


465 + 465 = 930 GB

And my computer reads:

Drum Roll. drum.gif

931 GB

I think the Extra 1GB is due to Rounding.
Yep. smile.gif

Technically Giga is a metric/SI prefix. Kilometres are 1000 metres long, and Kilobytes should be 1000 bytes large. Mega = 1000,000; Giga = 1000,000,000... that's how it is in science (Gigajoules! Megawatts!) but for whatever reason (DOS throwbacks?) /1024 based filesize capacities have stuck around with Windows.

If you ever see KiB or MiB or GiB or TiB on a webpage, they are indicating they mean the /1024 notation. If you download a 4.65GiB game it will take up 4.65 "GB" on your NTFS hard drive, but your ISP's bandwidth usage will go up 5GB. (Or if you're on DSL with PPPoE/ATM overhead, it'll go up 5.8GB - roughly 16% overhead...)
     
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Seagate 2TB - ST2000DM001 WD 640GB Black - WD6401AALS Seagate 6TB - ST6000DM001 Micron M500 - MTFDDAK480MAV 
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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 
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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
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post #7 of 7
Thread Starter 
I learned something today. Thanks!

I found a Esata to Sata wire on Amazon. if I did rig a Desktop PSU and use a Molex to Sata power converter and used the Esata/Sata wire on my laptop. Do you think that will work? And do you think I will get the same read speeds as Sata I / II / III?
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