RAID, an acronym for Redundant Array of Independent Disks (sometimes incorrectly referred to as Redundant Array of Inexpensive Disks), is a technology that provides increased storage functions and reliability through redundancy. -Wikipedia

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MegaCLI always returns blank output

This server is a Dell R200 running Ubuntu 8.04LTS using a LSI SAS1068E raid card supplied from Dell, I suspect that there might be some kind of RAID issue with the hardware raid built into the ...
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4answers
746 views

Recommended storage system for video streaming server [closed]

I am developing a video surveillance system that records and streams back many video streams from many remote IP cameras. One server would be run on one machine that handles around 500 video streams ...
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1answer
851 views

Multiple RAID arrays on HP Smart Array E200i controller

We currently have a HP ML350 G5 server with 3 disks in a RAID-5 array. Is it possible to add more disks, and have them setup in a seperate RAID array on the E200i controller. I.e. not just adding ...
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2answers
221 views

How to recover from RAID 5

there are 5 disk-array. i've lost the data of one of them. How can i recover? I don't know where to start?
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1answer
512 views

How to create partition when growing raid5 with mdadm

I have 4 drives, 2x640GB, and 2x1TB drives. My array is made up of the four 640GB partitions and the beginning of each drive. I want to replace both 640GB with 1TB drives. I understand I need to 1) ...
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4answers
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Raid 5 rebuilding epic fail

Someone has asked me to rebuild a faulty raid 5 on a 3ware raid controller. I have 3 drives, all of them is 160 GB. I've gone through the steps, ie selected the degraded array unit, and then gone over ...
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4answers
3k views

Problem configuring RAID 5 with Windows Server 2008

I have 8 1TB Drives in my machine, set up as RAID 5 The raid controller is a 3ware 9650 SE 8LPML http://www.3ware.com/products/serial_ata2-9650.asp I'm not sure if its important, but the mainboard ...
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5answers
22k views

RAID 5 with different sizes and different speeds?

With RAID 5 capability is lost if there are disks of different sizes? Same as RAID 0 and RAID 1. If something happens the speeds are different? 10K and 15K.
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“personality does not support diskops!” when trying to add a drive to a mdadm raid array

I have a linux (3.19) server which uses software raid (mdadm v3.2.5) and there is a raid0 device (/dev/md2) set up, which currently has only /dev/sdb3. I want to add the unused disk /dev/sda3 to this ...
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1answer
39 views

Why does linux automatically start a hardware RAID1 resync, on two new and blank disks and how do I stop it?

I've looked at similar posts about software RAID, but this is a hardware RAID question, and googling did not turn up anything so I turn to you guys. I understand that hardware RAID has a single-point ...
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2answers
64 views

mdadm - RAIDs of partitions or partitions of RAID?

If using entire drives for an mdadm RAID which will be the boot device as well, is it more correct / standard to: 1) Configure the RAID out of partitions that encompass the whole drive (like ...
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RAID1 very slow with LSI card and 2x Samsung EVO 850 drives

not sure if I'm checking it correctly, but here is what I have. Desktop, LSI 9260-8i card, see config below. 2x 500Gb Samsung 850 EVO drives. I also have Samsung 830 drive attached to motherboard ...
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3answers
12k views

Problems with DL380 Gen9 Smart Array

I recently bought a ProLiant DL380 Gen9, i've had some trouble getting it up and running...I ran the ProLiant SPP ISO to uprade firmwares but felt the system became less stable as a result, at one ...
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3answers
4k views

Very poor performance on LUKS/LVM/RAID combination under Debian Squeeze

I have the following issue: I have an encrypted partition on a lvm on a plain partition on the hd. Now I craeted a RAID array to increase the performance. That means, that I have the following stack: ...
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1answer
746 views

How can I grow a 3Ware 9650SE RAID1 under ESXi 5.0?

Thanks to this question I've now got my ESXi 5.0.0 (Build 623860) running/booting off a physically enlarged 9650SE controlled RAID1 array. The 1TB drives had been replaced with 2TBs; I'd like to ...
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1answer
738 views

How can I migrate a RAID1 setup to larger drives on an LSI 3ware 9650SE?

I've got VMWare ESXi (the free version) machine that is booting off a 9650SE RAID-1 drive setup (two 1TB mirrored drives). I'd like to replace the 1TBs with 2TBs. Is there a safe way to do this? ...
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2answers
115 views

Replace RAID1 Disc - things to consider

One of my RAID controllers is complaining about a harddrive failure: -- Controller informations -- -- ID | Model c0 | PERC 5/i Adapter -- Arrays informations -- -- ID | Type | Size | Status | ...
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1answer
3k views

HP ProLiant DL360 G5 disk diagnostic issue

We recently got two used drives (15000) and installed on our HP proliant dl360 G5 server. Created RAID1 and used HP SmartStart CD to perform diagnostics. Interestingly, the Diagnostic tab immidiately ...
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1answer
664 views

Smart Array P212 Raid controller on SBS 2008 ProLiant G6

I had a mirrored array with 2 * 1TB drives. I have replaced both drives (one at a time and allowed it to rebuid) with 2 * 2TB drive. So I now have a capacity of 2TB rather than 1TB. However, the array ...
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1answer
683 views

Strange boot behaviour

I have installed Arch Linux on a server machine with a LSI hardware RAID 5. When the machine boots, it says: :: Triggering uevents... udevd[37]: worker [41] timeout, kill it udevd[37]: seq 547 ...
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2answers
288 views

Poweredge 2850: replace disk with larger in RAID?

Is it possible / rational to replace a failed disk in a PE2850 (win2003) RAID-5 array with a larger size? Im not looking to expand the array - just to replace a failed disk with one that I have in ...
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1answer
132 views

Raid 1 read performance

It seems to me that while raid 1 should double the read performance (supposing to have 2 disk) this, at least with mdadm, don't work. I have centos 5. Will a megaraid 9280 controller change ...
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1answer
300 views

Missing RAID 6 array + LVM volume after hard reboot

After a restart which stalled, I did a hard reboot and now mdadm can't see the RAID 6 array anymore, LVM can't find the volume which was on that raid array. I have looked into /etc/mdadm/mdadm.conf, ...
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5answers
2k views

Very low performance of raid6

I noticed that writing to raid-6 is very low, but when I make tests with hdparm the speed is reasonable: dd if=/dev/zero of=/store/01/test.tmp bs=1M count=10000 Gives: 50Mb/s or even less. The ...
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2answers
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2nd drive in RAID 1 keeps failing

I have a bit of a problem here. I have a Ubuntu Linux server set up with 2 SAS drives in a software RAID 1 (created with mdadm). The RAID will run fine for a day, I can do cat /proc/mdstat and it ...
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1answer
118 views

Does the IBM Xseries 305 Server Support Raid Arrays?

I'm wondering if the Xseries 305 server supports raid arrays? If so, is there already a chip installed for it?
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5answers
5k views

HP Proliant ML110 G6 as first file server (RAID)?

Bit of a noobie and this will be the 1st server hardware I have purchased. We are a small design studio and I am about to buy our 1st server. I have successfully run Ubuntu on an old PC which has ...
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2answers
7k views

What tools can I use to test the real read speed of a RAID1?

Some RAID controllers speed-up read access when using RAID1. Other controllers can't do that. Trying some RAID1 configurations, I want to know if the read speed is faster both on a single file and on ...
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3answers
2k views

Dell SAS 5/ir - secondary disk update “data will be lost!” - will all data, or just secondary disk?

On a Dell SAS 5/ir RAID controller, I have a RAID 1 array which is Degraded. One drive has failed. Upon replacing this drive the controller doesn't automatically resync the array. There's an ...
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3answers
1k views

HP ProLiant RAID configuration [closed]

I have a HP Proliant DL 380 G7 Server with a RAID 5 that has 2 failed disks. My Question is, can i reduce the array to 3 hard disks that are remaining to work with them alone? Can I do this without ...
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1answer
5k views

Extend RAID 5 to use unused space and add additional disks?

I am new to RAID. I want to extend an existing RAID 5. The current setup is as follows: Array A unused space : 349956 MB logical drive :1 total size 273GB raid5 disk : /dev/cciss/c0d0 physical ...
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1answer
609 views

Debian Squeeze with RAID 10 [closed]

I'm trying to do a fresh install of Debian Squeeze on a server and set it up with RAID 5, or RAID 10 if possible (4 disks). I'm having difficulty finding detailed instructions on how to do this. I'm ...