0
votes
1answer
19 views

Format system and preserve RAID

I have a system on an SSD, and beside that, a set of 4 disks are connected over software RAID 5. I have a problem with that system now and I'd like to format that system and install a new one. If I ...
0
votes
1answer
46 views

RAID5 vs RAID4 purpose of floating parity

I still did not get why is RAID5 better than RAID4. I understand both computes parity bits that are used for recovering if some failure occurs, the only difference is in storing those parity bits. I ...
0
votes
0answers
44 views

Is it possible to restore lost files from a repartitioned raid 5 array?

I decided to reinstall my server from Windows Server 2008 R2 to Ubuntu Server 13.10. Of course, i took a backup of the (531GB) files on my software raid 5 array (4x3TB, no hotswap), however, some ...
1
vote
3answers
224 views

In a RAID 5 disk array, does recovering a drive increase chance of another drive failing?

If you have a basic RAID 5 array of 3 or more hard drives, and one fails, does this increase the chance of one of the other drives failing and making the full recovery impossible? If every one of the ...
0
votes
0answers
38 views

RAID and rebulding

I have the following setup: Raid 5: 1 TB Drive 2 TB Drive 2 TB Drive 3 TB Drive Which give me a total of 3TB. I just set this up tonight and I was testing to see what happens when I ...
2
votes
2answers
63 views

How picky are RAID controllers when replacing a drive?

I had a drive fail in a RAID5 array and I'm working on finding a replacement. It's an older drive that's fairly hard to find, and most of them out there are used. How close of a drive do I need to the ...
1
vote
2answers
141 views

One unknown drive in previously operational RAID5 array

I have a RAID5 array on my computer, 3X 200GB sata drives. Everything has worked great forever but all of a sudden when I turn it on the BIOS shows that only two of the three drives are functioning. ...
1
vote
1answer
132 views

Hardware RAID 1 With ERC/TLER/CCTL

I am aware of the problem when using standard consumer-grade drives with RAID levels 5 and 6; if a drive takes too long trying to read and/or repair a bad sector, it will be dropped by a hardware RAID ...
1
vote
1answer
355 views

Disk durability when using RAID 10 vs RAID 5

Most of the time technical articles about different RAID levels mostly about how redundant they are, how fast on read/write etc. But I can't find information about would a disk in a certain RAID live ...
0
votes
3answers
302 views

Is it better to partition hard drives for a RAID?

I have four 1TB hard drives and want to set them up in a RAID (5). Some calculations: 4x1000G = 3000G usable space 8x500G = 3500G usable space 16x250G = 3750G usable space Does this mean it will ...
8
votes
2answers
19k views

Can I set up a RAID 5 with a bunch of drives of different sizes?

I currently have 3 1TB drives, a couple 500GB ones and some 750GB ones. Can I put them all in a RAID 5 configuration or do they need to be of same size?
0
votes
1answer
74 views

RAID Reconfiguration

I have 4 1TB hard drives that I'm about to put in RAID 5. One of the drives is defective to the point that it isn't usable. I have a spare 1TB drive, but it runs at 5900RPM as opposed to the other ...
0
votes
1answer
306 views

How to increase the capacity of a RAID 5 array?

Assume that I built a 2TB RAID 5 array, and it's running and some data is stored on it. Now I need to increase its size to 5TB. Can I increase capacity, particularly by adding extra drives? How? If ...
1
vote
1answer
315 views

how to find bad disk in raid array?

I have a RAID5 array and one of the disks clicks whenever I start up the array. During array operation, it seems to run fine though. This has me worried that I'm going to start running into problems ...
3
votes
1answer
152 views

“Breathing” sound from Linux File Server

I have a Ubuntu file server and it makes the oddest sound. I can hear a HD making a "breathing" type sound, like the disc spins up for a moment and then cycles down. It happens on a very regular ...
1
vote
2answers
109 views

Partitioning a raid array (RAID 5)

I want to partition my RAID 5 array to put a linux swap on it. Does partitioning a raid array affect performance of the overall system? Are there any disadvantages of doing it?
3
votes
2answers
252 views

What would you see if you tried to mount a single drive from a RAID 5 Array?

The title pretty much sums it up - if someone were to mount a single drive from a software RAID 5 array, what would they see? Would it point to being part of a RAID array, appear as encrypted data, or ...
1
vote
1answer
1k views

rebuilding raid array (rocket raid 1740)

so my rocketraid 1740 controller has 4 connectors .. i set it up with raid 5. drive on port 4 failed, but it comes back online after computer reboots. array saw this, and started to rebuild the ...
1
vote
1answer
220 views

HTPC : Ubuntu 4-Drive Raid5, Expanson

So right now I have a HTPC with (3) 1TB harddrives Software-Raid5'ed giving me something like 1.9TB of storage available for recording TV shows / media / backing up my DVD's. As I'm about 50GB off ...
1
vote
1answer
145 views

Where do I start diagnosing a RAID drive that won't come up?

I've had this Cavalry 4TB RAID drive connected via eSATA to a Win2003 box for a year or two, and it's not coming up any more (can't see it in Explorer, or in disk management). I've also tried ...
6
votes
3answers
427 views

How does RAID5 work? [duplicate]

In a raid 5 setup, you get 4 TB of usable space out of 3 x 2 TB disks. How is that possible? Simple minded as I am, I would think that you need 4TB to store your things, and use the remaining 2TB for ...
1
vote
3answers
370 views

RAID-5 Using Three or More Partitions on Two Physical Drives

I am new to RAID and I want to setup up a RAID-5 on my Ubuntu 10.04 sysatem. I have the kernel installed on a partition of a 500 GB disk. Then, I have another partition of FAT32 on the other half ...
1
vote
3answers
536 views

Asus P5DL2 motherboard w/ on board RAID dies.. no backup of data

Asus P5DL2 Motherboard using RAID-5 w/ 3 hard drives. The motherboard has died, but the drives are fine. The user was not making backups of their data (how many times do I have to tell people, "RAID ...
1
vote
1answer
337 views

Rebuild split RAID5 array

I'm running 6 320GB SATA drives in a RAID5 configuration on a Gigabyte M59SLI S5. Last week the system started hanging durning array initialization. One of the disks is dead and another has been ...
0
votes
2answers
3k views

Is it better to buy a 4TB RAID 1 hard drive, or 2 hard drives with 2TB each, and just use SyncToy (or invest more and buy a RAID 5 drive)?

Somebody said that with a RAID 1 drive, 4TB will be 2TB of storage, but if the controller goes bad, then the whole drive will go bad -- unless WD can send you a new enclosure? (stated in ...
11
votes
10answers
7k views

Looking for an actual experience of RAID 5 2 drive failure? [closed]

I'm wondering if anyone has any personal experience of RAID 5 2 drive failure with large drives? As I understand it, the theory is that with large 1-2TB drives, if one drive fails in the raid set, it ...