search for: raid

Hi, I am looking into purchasing a new server. This server will be mission-critical. I have read and somewhat understood the theories behind RAIDs 0, 1, 5, 10 & JBOD. However, I would like to get some feedback from those who have experience in implementing and recovering from a HDD failure using RAID. Hardware specs include:- Dual Xeon 3.2 GHz 2 GB RAM I would like to implement hardware RAID but am unsure as to which would be most...

Hello I have a CentOS 6.6 Server with 13 disks in a RAID 6. Some weeks ago, i upgraded it to 17 disks, two of them configured as spare. The reshape worked like normal in the beginning. But at 69% it stopped. md2 : active raid6 sdj1[0] sdg1[18](S) sdh1[2] sdi1[5] sdm1[15] sds1[12] sdr1[14] sdk1[9] sdo1[6] sdn1[13] sdl1[8] sdd1[20] sdf1[19] sdq1[16] sdb1[...

So I've learned a valuable RAID 0 lesson, and it fortunately was not a major catastrophy. I got lucky, and had a workable-enough backup on tape to make the user who needed some data happy. Now, from the OS side, LVM is an option. Say the RAID controller only allows hardware striping or mirroring for logical volumes, but I...

...nding up with my swap partition on sda1, /boot on sda2, and root on sda3. for $REASONS I want /boot to be the partition #1 (sda1) My kickstart storage config looks like this: bootloader --location=mbr --driveorder=sda,sdb zerombr ignoredisk --only-use=sda,sdb clearpart --all --drives=sda,sdb part raid.boot0 --size 1000 --ondrive=sda part raid.swap0 --size 8192 --ondrive=sda part raid.root0 --size 8000 --grow --ondrive=sda part raid.boot1 --size 1000 --ondrive=sdb part raid.swap1 --size 8192 --ondrive=sdb part raid.root1 --size 8000 --grow --ondrive=sdb raid /boot --fstype ext4 --device md0 --lev...

I have been reading about software raid. I configured my first software raid system about a month ago. I have 4 500 Gig drives configured in RAID 5 configuration with a total of 1.5TB. Currently I configured the complete individual drivers as software raid, then created a /dev/md0 with the drives I then created a /file_storage partiti...

Hello, I'm trying to do a kickstart install of centos5. I'm pulling it off a network server and i'm getting an error, in the parsing of the file. It refers to line 31, i'm not going to show the complete file, but here is the indicated line: raid swap --fstype swap --level=RAID1 raid.4 raid.7 and the raid lines: part raid.7 --size=512 --ondisk=hdb part raid.4 --size=512 --ondisk=hda My parse error message is: "option --device is required" The raid lines indicate which drive to work on, i'm not seeing the issue. Any help...

Hello list. The next days we are going to install Centos 7 on a new server, with 4*3Tb sata hdd as raid-5. We will use the graphical interface to install and set up raid. Do I have to consider anything before installation, because the disks are very large? Does the graphical use the parted to set/format the raid? I hope the above make sense. Thank you in advance. Nikos

...home network). It will be used to store files, (docs, music and DVD ) for all of these machines, print server, (two ink-jets), mail server and later on a myth tv set up. Would SAMBA be the best option for the file and print serving ? The mother board has 2 X IDE channels, 2 X IDE channels with raid and 2 X SATA raid channels, that's up to 10 hard drive devices. The IDE raid chip is a GigaRaid IT8212F chipset. It supports raid 0 or raid 1 and raid 0 + 1 and JBOD. The SATA raid is a Silicon Image Sil3512. It supports Raid 0 or 1. Would I get better speed performance using the chips to m...

Hello. A couple of years ago I installed two file-servers using kickstart. The server has two 1TB sata disks with two software raid1 partitions as follows: # cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sdb4[1] sda4[0] 933448704 blocks [2/2] [UU] md0 : active raid1 sdb1[1] sda2[2](F) 40957568 blocks [2/1] [_U] Now the drives are starting to be failing and next week I'll backup /homes, reinsta...

On 11/16/2020 01:23 PM, Jonathan Billings wrote: > On Sun, Nov 15, 2020 at 07:49:09PM -0500, H wrote: >> I have been having some problems with hardware RAID 1 on the >> motherboard that I am running CentOS 7 on. After a BIOS upgrade of >> the system, I lost the RAID 1 setup and was no longer able to boot >> the system. > The Intel RST RAID (aka Intel Matrix RAID) is also known as a > fakeraid. It isn't a hardware RAID, but...

Hey Guys, I have some questions?regarding?a new home server I am going to build in the hopefully very near future (ASAP, I just need to finish planning everything and this is the penultimate?hurdle), I will be creating a software RAID... Lets say I have three drives "knocking" around which are all 1TB SATA II drives but each made by a different manufacturer. I am going to guess that these couldn't be used in a RAID 5? Or could they? However could a similar result of 2TBs of data with redundancy be achieved with J...

On 2019-07-01 10:01, Warren Young wrote: > On Jul 1, 2019, at 8:26 AM, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: >> >> RAID function, which boils down to simple, short, easy to debug well program. I didn't intend to start software vs hardware RAID flame war when I joined somebody's else opinion. Now, commenting with all due respect to famous person who Warren Young definitely is. > > RAID firmware wi...

Hi, I am installing Centos ServerCD 4.4 64-bit on a new Supermicro board, the RAID BIOS looks fine, RAID 5, all 4 Seagate ES 250 GB drives show up as a single array in the RAID BIOS tool, and the OS install phase completes without a hitch. One thing I noticed was that the OS was loading the sata_nv driver and picking up the 4 Sata drives instead of the large RAID5 volume, it...

Hi people, I am building a cheap remote rsync backup server using a software raid 5 array of 4 500GB disks. What I have available on the market is: 1. HITACHI GST Deskstar T7K500 500GB 7200rpm 16MB cache Serial ATA II-300 2. SEAGATE Barracuda 7200.10 with NCQ 500GB 7200rpm 16MB cache Serial ATA II-300 3. Western Digital 500GB SATAII RAID EDITION Caviar SE16 7200rpm 8.9ms 16MB c...

On July 1, 2019 8:56:35 AM CDT, Blake Hudson <blake at ispn.net> wrote: > > >Warren Young wrote on 6/28/2019 6:53 PM: >> On Jun 28, 2019, at 8:46 AM, Blake Hudson <blake at ispn.net> wrote: >>> Linux software RAID?has only decreased availability for me. This has >been due to a combination of hardware and software issues that are are >generally handled well by HW RAID controllers, but are often handled >poorly or unpredictably by desktop oriented hardware and Linux >software. >> Would you ca...

I am using a kickstart file for CentOS 7 raid / --device=md0 --fstype="xfs" --level=1 --useexisting raid /home --noformat --device=md1 --level=1 --useexisting It is erroring out on the --useexisting. The exact text is: RAID volume "0" specified with "--useexisting"...

This is what I have for configuring software raid on sata drives in my kickstart config <snip kickstart.cfg> clearpart --initlabel --all part swap --size=2048 --ondisk=sdb part swap --size=2048 --ondisk=sda part raid.01 --size=101 --ondisk=sda part raid.02 --size=101 --ondisk=sdb part raid.04 --size=1 --grow --ondisk=sdb part raid.03 --siz...

I purchased an Intel D945GNT motherboard and it comes in the BIOS with an option to create a RAID 0 or RAID 1 volumes using my existing two SATA disks. However when installing Centos 4.3 x86_64 I see the the installer recognices the two drives and does not "see" the RAID 0. Is that ok? Should I disable the RAID in the BIOS and then go for a LVM+RAID 0 setup in the installer ? Since it...

I have 2 questions dealing with 2 different kickstart files. 1) my kickstart sections for RAID disk setup and kickstart reports it cannot find sda. Why is that. sda is there and works. clearpart --all --initlabel part raid.01 --asprimary --bytes-per-inode=4096 --fstype="raid" --onpart=sda1 --size=20000 part swap --asprimary --bytes-per-inode=4096 --fstype="swap" --onp...

On 29 August 2007, "Ross S. W. Walker" <rwalker at medallion.com> wrote: > Message: 39 <snip> > I wouldn't worry too much about the OS HD configuration, you are > always going to want RAID1 for the OS, whether software or hardware. > > Reason I say not to worry too much about the OS HD config is because > you are almost certainly going to put the application or user data > on a separate array, so the OS HD is basically used for loading > binaries. Ross: Thank you! I...