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Questions tagged [raid6]

RAID6 is a method of configuring fault-tolerant hard drive storage. It is similar to RAID5, but differs in that it writes two sets of parity information, thus can survive the simultaneous failure of two hard drives.

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esx4 vmfs3 raid rebuild

I have a ESX 4.1 Server with a storage on RAID 60. After the rebuilding of the RAID the vmdk-files are not working in my VM. On starting VM I have this error: Cannot open the disk…
fatumator
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mdadm & raid6: does "re-create(with different chunk size) + resync" destroy orig. data?

I would like to rescue data on my software raid-6 array. I did some stupid actions (described bellow) with this original array. Main Question: I need to know if original data stored on raid-6 array are definitely lost (or not) after the following…
schanhorst
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RAID 6 to RAID 1 with mdadm

My home network is changing and I am moving my file storage solution away from my Ubuntu server and onto a Drobo FS. I currently have 6 500GB hard drives in a RAID 6 array providing 2TB of capacity. All important data on the existing RAID 6 array…
Marcus Whybrow
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RAID Virtual Disk Configuration / Partitioning in Operating System?

I have 6 x 1TB SAS for my new server. I want to create 3 partitions: one for OS, one for Virtual Machines, one for share data. There are 2 options for me: Option A: Create 3 Virtual Disks in RAID Configuration Utility Option B: Create 3 Partitions…
Raptor
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Upgrade from SATA to SAS: Expected speedup?

My current setup is this: Megaraid 9361-16i 12 x 12 TB SATA disks WD DC HC520 Connected to the controller via 3 of the 4 SAS ports Configured either Raid-10 or Raid-6 without spares. Raid-6 in write-back mode Formatted with ext4 Ubuntu 22.04 My…
Homer512
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RAID6 REBUILD - Virtual Drive not importable

Good morning, Last week, the heatsink of our LSI9271-8i Raid card dropped off from the card and the card is dead. It is an 8 disk x 10TB (Slot7 is hot spare) RAID6. Well, we have another LSI9271-8i, same model as dead card. When we first attached…
matabufalez
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md Raid6 array disapeered on reboot

my raid6 array disappeared on reboot after I grew it. I believe the issue was growing 2x with the full disk not partition. It has been suggested a possible other reason the drives were not correctly recognized is I didn't zero the superblocks before…
tjgrillz
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How do I expand my VD on LSI 9361-16i?

I've got a 9361-16I installed in a supermicro sc847. I have the 2 expanders running in a cascaded configuration with both of them chaining off port 0-4 of the card. They are being exposed as enclosure 30 and 31. Array Info I have 24 Shucked…
Zack Lapinski
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Adding an Uncofigured Good drive to an existing drivegroup/RAID setup

I have a machine with a few drives in it. Running storcli /c0 show produces this relevant info, et.al.: TOPOLOGY : ======== ---------------------------------------------------------------------------- DG Arr Row EID:Slot DID Type State BT Size…
Jarmund
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Ceph - Erasure Coded Pools - Always get inactive pgs

I'm trying to achieve similar thing to raid6 on ceph. But When I'm creating erasure coded pools (k=3 + m=2(or k=4) ) I always get inactive pgs. ceph health details are: HEALTH_WARN Reduced data availability: 128 pgs inactive PG_AVAILABILITY Reduced…
Lisek
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Expanding Perc 6/E Raid 6 while in use - Can this cause data loss?

There seems to be a lot of information on the 6/i controller but not 6/E. The Dell manual has bit of information on converting from one raid level to another but it does not specifically answer my question. Also, in researching this I saw a post for…
Eric Snyder
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Can I make an Active Spare disk permanent?

We have a ProLiant ML350P Gen8 server with a P420 controller running ESXi 5.5. It has a RAID 6 array using 7 disks. One of the disks got marked as Predictive Failure, and in response to this we added an 8th disk to the array as a spare. We ejected…
mwfearnley
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QNap Nas-Finding drive order for Raid 6

I have a Qnap 10 bay Nas that had two separate raid setups in it. I know that the Raid6 ran from left to right 1~5 slots, and then the Raid5 ran from slots 6~8. They both had hot spare drives in slot 9 for the Raid6 and slot 10 for the Raid5. I am…
CanTai
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RAID 6 array much faster than my RAID 10 array?

How come my RAID-6 outperforms my RAID-10? Docker container on Synology with 8x4TB RAID-10: [root@centos Files]# bonnie++ -d /Files/tmp -r 16G -s 32G -n 1 -f -b -u root Using uid:0, gid:0. Writing intelligently...done Rewriting...done Reading…
ujjain
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grwoing raid 6 using mdadm failed - how to undo?

so I have a raid 6 array in my server. Until yesterday, it comprised 11 devices each the size of 1TB. These devices have been running in a raid 6 array. Yesterday i tried to extend the array: Added new device (being /dev/sdb), partitioned (resulting…
Stephan Richter
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