Is it possible to make such a raid?

Mikeprosoft2011-02-02 08:53:07

Hard disks

Mikeprosoft, 2011-02-02 08:53:07

The essence of the task: it is necessary to make sure that the data is protected from loss as much as possible.
The computer currently has a 250GB screw. I'm thinking of buying 2 terabyte screws and making a raid out of them, but the question arises, is it possible to do this at all? That is, 1 screw per 250 will be used, which is not in the raid and 2 of 1TB in the raid.
And yet, will I lose performance from this?

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6 answer(s)

Puma Thailand, 2011-02-02
@opium

1) There will be only 2 1 TB hard drives in the raid.
2) To save information, collect RAID 1, it will make a mirror of two screws, the final volume will be 1 TB, and if one screw dies, infa will be on the second.
3) With such a raid, in theory, you will win in reading speed, but lose a little in writing.
4) Do not buy a raid controller, make a soft raid, you won’t have enough money for a good raid controller from 300 bucks, and the quality of cheap ones is worse than a soft raid.
5) Negative the one who wrote that raid 0 is a mirror. Prooflink ru.wikipedia.org/wiki/RAID
6) With the current processor capacities, your raid 1 will take quite a bit of processor resources, because simple mirroring, without checksum calculation (as in the 5th and 6th raids).
7) The system should be put on a 250 screw and not store any important data on it, besides, this will give a slight increase in performance.

Kirill Mamaev, 2011-02-02
@r00tGER

If you are going to do a software raid, then this will require resources. And if you also buy a raid controller along with the screws (it may already have one built into the motherboard), then it will not affect performance.

holivar, 2011-02-02
@holivar

1) Soft Raid 1 will not slow down and the processor time will take little and even imperceptibly 500 GB - in general, split disks into raids as you wish, up to the point that you do not have to buy two terabytes if you only need 250 gigabytes to securely protect.
3) Also put the system on a raid, it will work faster + if one of the disks fails, it will not stop working. In the case of Linux, you need to put on the raid, including the Swap partition

XaBoK, 2011-02-02
@XaBoK

The RAID array will be treated as a single drive. So there should not be any problems when working hard at 250 and an array. But performance is a tricky issue. Depends on the choice of RAID and how you distribute the files.
Most likely you want to mirror (RAID 0), that is, you will have a fast 1TB disk and a slow 250 gigs. If you leave the operating system at 250, then there will not be much performance gain. So see how you best distribute files - so that everything that requires reliability and speed is on RAID.

Evgeny Yablokov, 2011-02-02
@Gular

With software raid level 0, performance is usually higher due to duplication of information on disks. Therefore, theoretically, with intensive disk operations, there will be a gain in speed. Practically - it is necessary to check, well, it all depends on the disks themselves. And yes, it's better to keep the OS on an array too.

DIEGOR, 2011-07-26
@DIegoR

Ride does not protect against data loss. Make a backup!