400gb Sata hard drive configured as RAID

[bogsgoldgavin]

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400gb Sata hard drive configured as RAID.. ano po ibig sabihin ng "configured as raid"? sorry newbie lng po. maraming salamat mga istoryans! more power!

[icecube]

400gb Sata hard drive configured as RAID.. ano po ibig sabihin ng "configured as raid"? sorry newbie lng po. maraming salamat mga istoryans! more power!

It could be two 200gb(400gb total coz it should be pair) configured in raid0, raid1, raid etc. Coz if you want to configure your hardrive to raid, it should be at least two hardrives for raid o and raid 1, depends. I think three hardrive is needed for raid 5, I havent use raid 5. I'm currently on raid 0. you can raid single drive but its useless, running raid should be in pair. Raid is just like making your two drives like huge single drive, like raid0 (stripping).

If you plan to use raid0 (stripping), then you need two identical drive, preferably. Coz what raid did is, its just putting the data on both drive equally. Writing and reading the data simultaneously so it is more faster than non raid configuration. But be reminded, that if the other drive fail, both drive fails coz data were devided into half. Your motherboard should be capable of raid as well, otherwise you cant raid the drives.

Raid1(mirroring) is different, your 2 200gb hardrives will still be 200gb even though you have 400gb coz the other drive were use as mirror, that is why it is called mirroring. Reading and writing simultateously with exactly the same data on 2 drives. Its safe, coz if 1 drive fails, you have the mirror of the other drive. Depends on your needs, what type of raid is exactly you want.

There is also Raid0+1 and Raid 5.


as cool as ice...

[EarlZ]

you can raid single drive

Enlighten me which raid mode CAN do with only 1 drive ?

If you plan to use raid0 (stripping), then you need two identical drive, preferably. Coz what raid did is, its just putting the data on both drive equally. Writing and reading the data simultaneously so it is more faster than non raid configuration. But be reminded, that if the other drive fail, both drive fails coz data were devided into half. Your motherboard should be capable of raid as well, otherwise you cant raid the drives.

First you say "its putting the data on both drive equally" but then "coz the data were divided into half"
Pag chor oi!

Raid is just like making your two drives like huge single drive, like raid0 (stripping).

What your trying to say that RAID0 is like combining both drives to be a single "huge" drive, but then you add "stripping" on the end.

I'm currently on raid 0.

I mean no offense but can you show pictures and screenshots of your system running at RAID0 mode.. and a HD Tach result.



@bogsgoldgavin


These are the 2 very basic RAID modes that you can easily start with;

RAID 0 : Known as Stripping, This would will REQUIRE 2 harddrives that are exactly identical for compatibility and data integrity purposes. Writing method is in data stripe's which means portions of the WHOLE data is partly written on each drive to speed up read and write access,A regular SATA drive writes at 45~55mb/s while using them on RAID0 increases that on a smaller scale at around 70~85mb/s , Using very high-end drives like a Western Digital RaptorX would further increase the write speed to 100~110+ mb/s. In case of a hard drive failure, complete data recovery is impossible. This is known as the FASTEST raid mode available.

RAID 1: Known as Mirroring,This mode still requires 2 harddrives ( Source and Target drive ), In this mode similar harddrives is still needed for full compatibility. This mode offers REALTIME data back-up of a source drive or even on a RAID 0 array ( Known as RAID 0 + 1 )This mode however ensures that if your RAID 0 does fail the Mirrored drive is used to fix the entire array.This mode also has a certain degree of CPU utilization when using onboard raid controllers.


Other raid modes include
RAID 3 and RAID 5

I am have very little information about both but i think they require a dedicated RAID controller.


Heres a simple diagram on it.




Now you may ask your self is it worth getting RAID 0 for gaming when factoring in the cost, absolutely NO even with a Western Digital RaptorX at RAID 0.. windows load times is greatly increased but game loading time barely gets affected coming from a single RaptorX

When is it more effective to get RAID0, i would say anything that is harddrive intensive like constant raw video editing or anything that always thrashes the harddrive.. like a webserver perhaps ?





Feel free to add any corrections as ive only configured a raid system twice and i have no deep knowledge about it.

[blade4638]

@bogsgoldgavin: add lang ko sa info ni Earlz...

RAID = Redundant Array of Independent (or Inexpensive to some) Disks

so sakto, you can't do RAID using a single drive (you need an array, which is at least 2 drives)... unless you find a way to "fool" the BIOS or the OS (software RAID?) into seeing a very high-capacity drive as 2 (or more) separate drives... but even if you can do this, it would be like fooling yourself c",) you do a RAID setup to either gain performance or for keeping your data safe (fault-tolerance), something which you can never do using just a single physical drive.

in addition to the RAID configurations mentioned above, you can do a combination such as RAID0+1 (mirrored striped sets) or RAID1+0 (striped mirrored sets).

[Wyrdo]

Enlighten me which raid mode CAN do with only 1 drive ?

sir, i would like to comment on this... i am also wondering why my computer, with single 80G SATA drive is a lot faster (i mean around 10X faster, according to 3 benchmark tests that i've made, and it can be observed) when configured as a RAID (rAID 0 I guess) as compared when I disable the raid function. I am confused on why is this so?, isn't it htat raid should be working with at least 2 identical hard drives like what sir earlz said? i am not also that familiar with these raid configurations.

[blade4638]

@Wyrdo: kumusta bro c",)

raid0 is disk striping (data is written in equal chunk sizes on each disk in the array) so dili gyud pwede 1 lang ka disk.
raid1 is disk mirroring so mao lang gyapon, dili pwede 1 disk lang...

btw, what benchmarking programs did you use? what board are you using? how did you setup raid? c",) c",)

[bogsgoldgavin]

thank you very muck to all of you! now i understand bout that "raid thing". i really learn a lot from this forum!

[EarlZ]

Good to hear that you learned something from the discussion above.

[Wyrdo]

@Wyrdo: kumusta bro c",)

raid0 is disk striping (data is written in equal chunk sizes on each disk in the array) so dili gyud pwede 1 lang ka disk.
raid1 is disk mirroring so mao lang gyapon, dili pwede 1 disk lang...

btw, what benchmarking programs did you use? what board are you using? how did you setup raid? c",) c",)

bro, ok ra man. payter ra gihapon ang mem. he he. thanks nasad... balik ta sa topic. he he

my mobo is asrock7 kalimot ko sa exact model, but the raid is set-up using a disk when installing the OS, and enabling the RAID on the BIOS... the benchmark that i've used, is ATTO, speedhdd, and i forgot the other one... almost same ang result.

[chocomai]

using raid 0 and raid 1 only adds more points of failure to your system, but it does increase system performance, on harddisk intensive tasks.

i recommend if you really need raid is to use separate controllers and use raid 5.

but if nag experiment lng ka .. its alwys good to try and experiment new stuff

u can use software based raid on some windows systems too. i think win2k servers etc.