RAID Help

[DeathFox]

---

I want to make a storage PC na usa ra kadrive makita with several hard disks on it. And kaang madungagan ra without having to format the whole thing. Unsaon? o_O

[giancarlo]

you can implement a RAID 1 bro

[jerm_ironz]

implement ug RAID5 bro.. it uses 3 disks...mas reliable ang raid5...kelangan naa pud kay RAID controller...during sa pag install sa OS kelangan naka attach na ang 3 disk sa Raid Controller...you can read or research how to implement the RAID 5 configuration in google...for references

[blade4638]

implement ug RAID5 bro.. it uses 3 disks...mas reliable ang raid5...kelangan naa pud kay RAID controller...during sa pag install sa OS kelangan naka attach na ang 3 disk sa Raid Controller...

add lang ko...

3 disks ang _minimum_ for a raid 5 disk array. the hdds should have the same specs (size, speed, etc.). more disks can be used. and yes, very reliable ang raid 5 and dili kaayo "usik" ug disk space unlike disk mirroring (raid1).

prior to OS installation, the disks should already be configured as an array (via the raid controller), in addition to just being connected to the controller.

[poldopunk]

Raid 5 is like RAID 0 with error checking (parity). The 3rd hard drive is used for parity so the total amount of hard drives is only 2.

[jerm_ironz]

info lang mga bro...

RAID 0
This level of RAID uses striping on multiple disks. This means that a volume contains stripes on multiple disks and the data can be written simultaneously to these stripes. In other words, the data is striped across multiple disks. Because you can write to various stripes simultaneously, RAID 0 improves performance, but it does not implement fault tolerance even though it uses multiple disks. Imagine a file written on various stripes residing on multiple disks. Now if one disk fails that contains a stripe of the file, you lose the file.

RAID 0 + 1 / RAID 10
This is the same as RAID 0, but the stripes are mirrored to provide fault tolerance in addition to performance improvement by striping. However, mirroring can slow down performance

RAID 1
This RAID level uses mirroring (or duplexing) on two disks to provide a very basic level of disk fault tolerance. Both disks contain the same data—that is, one disk is a mirror image of the other. If one disk fails, the other disk takes over automatically. This RAID level also provides performance improvement in data reads, because if one disk is busy, the data can be read from the other disk

RAID 5
This RAID level implements striping with distributed parity—that is, parity is also striped across multiple disks. The parity function does not have a dedicated disk—that is, the data and parity can be interleaved on all disks. However, it is clear that the parity of a given piece of data on one disk must not be written to the same disk, which would defeat the whole purpose of parity. If a disk fails, the parity information about the data on the failed disk must exist on other disks so that the lost data can be reconstructed. If more than one disk fails, it's possible that you will lose parity information along with the data. If you use only two disks, you cannot distribute the parity information, because data and parity must be on separate disks. Therefore, RAID 5 requires three disk

[jerm_ironz]

suggest ko mga RAID 10 if imong Raid Controller can support RAID 10 if not use RAID 5

[jerm_ironz]

pero ang RAID 10 uses 4 minimum disks...

[poldopunk]

if you're looking for short-burst performance like in games, spend your money on SSDs or velociraptors kay , this isn't the answer, RAID 0 and other performance varieties are mainly for sustained read and write and is basically useful on servers, gamay ra jud kaayo ang difference that its almost insignificant not to mention the bootup times will increase a bit. pero if you want redundancy, RAID 1 is an easy answer.

i've been on raid 0 the past few months, and the boot time versus minimal benefits with RAID 0 convinced me to go back to IDE Emulation kay AHCI mode also has a startup time.

**EDIT**

with RAID 1, it doesn't mean you won't reformat because you will have to create an array before you install the operating system. if youre lucky, your system might have IRRT (intel rapid recover technology) which allows you to create a semi-raid setup (mirroring) without reformatting the computer. simply enable IRRT in your BIOS, install the matrix storage manager then use the utility to create the mirror.

[blade4638]

Raid 5 is like RAID 0 with error checking (parity). The 3rd hard drive is used for parity so the total amount of hard drives is only 2.

nope. for raid 5, parity bits are distributed among all disks. this is why if any disk in the array fails, data can be regenerated from the remaining disks in the array if it is needed by the system. when the defective disk is replaced, the data is re-written,no data is lost.