Beiträge von BBmine

After some testing, I ditched the Compaq one because it didn't work (I saved the Celeron CPU and the RAM). Now I'm thinking of using an Everex from 2008. It has 1 GB of RAM and 2 SATA ports (more PATA ports, but that pc is flaky with PATA and SATA at the same time). It's CPU is pretty slow (don't know how many GHz, I can find out). If the celeron is good enough, and is compatible, I might use that CPU.

How well would openmediavault work on a Compaq Presario from 2004, or a HP Pavillion from 2002? I know I would need to use an external hard drive for the data, since they don't come with sata ports

Does anyone have any ideas for building a cheap NAS? Don't worry about the hard drives, I might have some spares. Any help would be appreciated.

Zitat von flmaxey

(When bad sectors start appearing, it's time to get your data off of the drive. Complete failure in the future is likely and it may be imminent.)
Just some quick notes on RAID:
RAID is NOT BACKUP. While it may protect you from a hard drive failure, there are many scenarios where you could lose the array. Good backup is a must and it doesn't have to be expensive.

RAID 0 - The insane array. This one is designed solely for faster throughput, and makes no sense in a NAS role. If either of the two hard drives fail, it's over. Everything is lost. (If you're after performance for a Desktop PC, you'd be far better off with a single SSD.)
RAID 1 - A mirrored disk set. The advantage is, if one disk fails, the other still has your data. The cost is one complete HD. (2 drives, at 4TB each = a 4TB array)
RAID 5 - A stripped volume. The advantage is, if one disk fails, the other disks still have your data. (A minimum of 3 disks is required and there is no maximum limit, in theory.) There's a read and write performance increase. The cost is, 1 drive to store parity. (3 drives, at 4TB each = an 8TB array)

Unless you're buying a server case and motherboard, the above covers most scenarios you may be considering.

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Yes, I know RAID isn't a backup.
I'm not sure if I'm buying a server case, but I think I'm going to buy a regular motherboard.

Zitat von flmaxey

If a bad sector suddenly develops and a file is written to it, no. The file may be corrupted. Also, bad sectors are usually detected on read operations. However, if bad sector(s) are detected, RAID 1 will (likely) fail the disk. A disk doesn't have to completely die to be failed by RAID.

If you're looking for bad sector protection, you might want to look at BTRFS or ZFS file systems. These file systems put check sum values on files, where a file will be rewritten if an error is detected. It's referred to, by some, as "bitrot" protection.

Thanks! I asked because the other day a hard drive inside a laptop got some bad sectors and that made me think about what RAID would do.

Hi, I was just wondering if an i3 CPU is good for software RAID 5, 6, or 10. If not, what would be a good CPU?

Intel - Core i3-6100 3.7GHz Dual-Core Processor

Hi, I've seen a few hard drives get bad sectors, thus corrupting some files, but not dying. Will RAID 1 or higher protect my files if a drive gets bad sectors? Thanks

Zitat von Nibb31

Using RAID 0 on a NAS is pointless. The bottleneck will always be the network, not the drives.

Actually, my current network speed is 100 megabits/s, and I was going to upgrade it to 1 gigabit/s soon. From my own testing on a local machine with a 7200 rpm HDD (granted, the HDD is 80% full, so it might be slowed down because of that), I was only able to get speeds of up to 320 megabits/s. That's about 1/3 the speed I could get with the upgraded network.

However, after some thinking, I've decided that maybe I won't do RAID 0, but a higher RAID. Just not sure which one yet.

Zitat von Nibb31

OMV supports software RAID. If you really need RAID (you probably don't), then that is all you need.

I was going to use RAID 0 (Maybe RAID 10 at some point in the future).

I know RAID isn't a backup.

Hi, I am looking at building my own NAS and using OMV. If I want to use RAID, should I buy a RAID card, or is it good enough to have the HDDs plugged into the non-RAID motherboard?