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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Thinkpad RD440 raid mess

Does anybody have experience dealing with raid config on these new Thinkpad servers? My problem is the following: In order to be able boot this server I must put the drives to RAID1 to create an SCM ...
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1answer
26 views

raid 1 & ml350 gen8 server with centos 6.2

I have a proliant ml350p gen8 HP SERVER with centos 6.2 and two hard disk with 1 TB for both. I have several GB of files and software about 100) with their configurations but I want to install RAID 1 ...
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37 views

Unable to get SMART metrics from Seagate Disks on Debian OS

Referring to the question here, I too am trying to get all attributes out, as explained in this blog here. I am using Debian 6 as OS, and installed smartmontools version 6.3 using apt-get. My 6 disks ...
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13 views

Build storage server (SAS/SATA help) [on hold]

Just bought a Lian Li PC-343B-XT (very nice case!), a cheap motherboard and an i7 CPU and a 650W PSU. planning to run Windows Server 2012 R2 on it. I also own a "Fujitsu D2607" SAS controller. My ...
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1answer
23 views

Fixing RAID on PERC S100

I had 3 hard drives in this server. The controller read that disk 0:0 was READY (not online) and there were 2 Virtual Disks. (One was my VD and the other was a mysterious non-RAID VD that I assume ...
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1answer
28 views

Hetzner script, configuring SSD + RAID1 image installation

I am trying to figure out how to set this configuration on my Hetzner server. The hetzner installimage script provides a default configuration (with comments: http://pastebin.com/tBqezpFn): # ...
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1answer
34 views

how to setup raid on the supermicro server? [on hold]

I just bought brand-new Supermicro server and need to setup RAID 1. I've tried to install RHEL 7 but it sees 2 drives, so it seems RAID 1 is not runninig. I guess I should change something on this ...
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1answer
37 views

Convert RAID from Mechanical Disks to SSD?

Any issues with converting a Mechanical Disk RAID to SSD by replacing the drives one-by-one? I couldn't find anyone online who has done this, so let's make this the place to post about it. If you ...
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1answer
115 views

Can HP Proliant server be set to use no RAID?

I recently purchased 2 HP Proliant DL380 G6 servers for the purpose of virtulization; each will be a new host in our VMware environment. I know that I will get heat for this, but I do not want to use ...
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1answer
22 views

SAS drive replacement in Proliant server and compatible drives

I am use an Prolian Server ML350-G5. The server has got two disk in RAID 1+0. The model of the disk is 432320-001 (146GB). One disk has shown an ambar light that means the disk needs to be replaced ...
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1answer
16 views

IBM BladeCenter S: How to configure new SAS disks

I have an IBM BladeCenter S, and I have added two new 450GB SAS disks. I want to configure the disks as a RAID 0, and assign the new disks to one of the servers in the Bladecenter. When I connect to ...
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2answers
36 views

LSI megaraid - config raid and non-raid

I have this configuration of server IBM X3650 M4 IBM ServeRAID M5110e 300GB x3 SAS (config as RAID 5) 1TB x1 SAS (config as normal disk, non-raid) Windows Server 2012 R2 Standard I would like the ...
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2answers
37 views

What types of workloads require SAS disks compared to SATA?

I am looking to outfit my new server (new to me) with larger capacity disks. The server right now has 4 SAS 146GB disks in it. My original thought was to just buy larger SAS disks and replace or add ...
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2answers
58 views

Dell RAID controller and 36TB storage [closed]

I've been back and forth with Dell about their RAID cards for a PowerEdge R710 server. So far half the customer service people who I spoke too said it would work, the other half said no. My question ...
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13 views

VDI LUN and RAID Group design optimization

I have a shared storage SAN for our VDI environment that was configured in a specific way by a third party and I was wondering what (if any) was the benefit of the design. The SAN is divided into ...
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2answers
25 views

PERC S100 status incorrect

PE T310 with a PERC S100, one RAID 5 array with three drives, status of the virtual disk is failed, but it boots and everything appears to work. All drives in Server Administrator are Online with a ...
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1answer
23 views

Configure RAID with 6 drives on Dell PowerEdge 2850

I'm trying to configure 6 146MB discs in 3 pairs of 2 as RAID 1 on my PowerEdge 2850 Server. This is how far I get: ONLIN A00-00 ONLIN A00-01 ONLIN A01-00 ONLIN A01-01 ONLIN A02-00 ONLIN A02-01 ...
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28 views

Dell R220 and OpenBSD/pfsense

Just wondering if anyone has any experience running OpenBSD or pfsense on a Dell R220 (with either a PERC S110 or H310? I know I can do software based RAID in pfsense, however I've seen a few posts ...
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23 views

Should I get RAID and why? [duplicate]

So I don't really understand RAID controllers, why should I have them in my servers and what could happen if I wouldn't have them, is there any bigger risk of losing data introduced when having them?
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16 views

Rebuilding FakeRAID RAID 5 with new disk, no partitions show up, invalid PMBR

I have a RAID 5 array with 4 2TB disks on a HP Z800. One disk failed and was swapped out for a new one. I went into BIOS Intel Storage Matrix Utility and set the Array to rebuild with the new disk. ...
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1answer
41 views

Best span size for 12 x 2TB drives in RAID10

We have just taken delivery of a new JBOD chassis, with 14 x 2TB NL-SAS drives - 2 have already been earmarked for enclosure spares, so we have 12 drives available. I have several options for setting ...
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1answer
185 views

Windows Server Backup Error - Volumes Larger than 16.7TB cannot be protected?

I'm trying to use Windows Server Backup to backup a RAID array on my new server. But, when I do, I run into this error: The server is running Windows Server 2012 R2 and the array in question is ...
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1answer
65 views

RAID-5 how can I guess how many disks was member?

We have a server which we inherited from previous sysadmin. Now the RAID-5 (H/W based on IBM ServeRAID) now unusable, saying not enough disks to operate. On ServeRAID Manager I can see three physical ...
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194 views

Can`t boot new VM on Xenserver 6,5 “tapdisk experience an error”

I have a problem. My server is Dell T310 with perc 6/i raid conroller. I have update any firmware and BIOs and the problem is still the same. My raid VD is RAID5 with 3 SATA 2TB hard disks. It's ...
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1answer
25 views

LSI SAS BIOS Pred Fail

So, Today I installed 2 new drives in my server, and the LSI SAS BIOS is stating Pred Fail Yes. What could I do about this, and what does Pred Fail Yes Mean? We need the server for backups, and we ...
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1answer
36 views

Disk I/O at limit with software raid

whenever I use rm or cp on a bigger file structure the disk i/o is going up to the top, but not with the focus on cp or rm, it is the software raid sync. My knowledge in this area is limited. The ...
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1answer
36 views

Repairing RAID6 with two drive issues mdadm

I have had two disk failures on my RAID6 array. I have added two new disks and did the following: I ran mdadm /dev/md1 --remove on the two disks I set up my RAID on the 1st partition of each disk ...
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1answer
53 views

Windows Server 2012 doesn't find RAID array during setup

I'm trying to install Windows Server 2012 to a HP ProLiant 140 DL G3. I've attached two Toshiba SSD drives with 256GB capacity each. I've enabled RAID in the BIOS and, using the built-in Disk Manager ...
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2answers
63 views

Slow writes Dell Server R720

I have a Dell R720 Server with PERC H310 hardware raid 5 and 4 x Seagate Cheetah 15K.7 ST3300657SS 300GB hard drives. Windows Server 2008 R2. The reads look good, but the writes are painfully slow. ...
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2answers
49 views

Extendable RAID storage system

I am currently building a storage unit for our office. It is rather low budget at the moment, but it needs to be extendable. basically we have a huge database that will grow over the next few months ...
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1answer
23 views

Replace predictive failure in RAID 10 array

We have 7 physical drives (6 RAID 10, 1 hot spare) attached to an LSI SAS2008 controller. Recently a drive failed and the hot spare took over. When the new drive landed I just replaced the failed ...
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31 views

Slackware 14.1 software raid kernel panic unable to mount root fs [migrated]

Trying to install slackware onto a raid 1 on 2 2TB drives. I followed the official readme. I have two drives, sda and sdb. They each have two partitions, one for /(50GB) and one for /home(Rest of ...
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1answer
79 views

megacli lost virtual disk raid configuration

I've been running centos on x64 with an LSI raid controller description: RAID bus controller product: MegaRAID SAS 1078 vendor: LSI Logic / Symbios Logic i was ...
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1answer
51 views

How to migrate RAID-6 from 5 disks to 4 disks while increasing disk sizes

I am having a quite complex problem and while I found solutions to individual steps (and already applied some of them in different contexts), I am not quite sure on how to do the whole procedure ...
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39 views

Why is my HDD partition a character special device?

I have a bunch of old 1T disks with an mdadm array on them. They had been out of commission for awhile, but yesterday I slotted them into a server running an up to date Debian Jessie. Eventually I ...
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2answers
104 views

Replacing HP P410 with P420 and keeping the data

Would it be possible to replace HP P410 raid card with a HP P420 raid card while keeping the data? I've replaced P410 with P410 without any issues obviously. I believe they use the same software, so ...
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24 views

Preseeding with RAID1 Encrypted LVM

I would like to preseed a debian wheezy system with Encrypted RAID1 LVM. I've done some google searching, seen others asking the same question, but have not found any answers. I have successful ...
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0answers
32 views

How i can restore 3ware array if i accidentally deleted units?

How i can restore 3ware array if i accidentally deleted units? Deleted with the command: ./tw_cli.x86_64 maint deleteunit c0 u0 But controller sees unit if rescan it like ./tw_cli.x86_64 maint ...
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2answers
83 views

3ware array limited to 6TB in linux

I have a server with a 9650SE-24M8 in it. which has a 7x2TB drive RAID5 array. tw-cli shows the following: Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ...
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41 views

VDS fails to write boot code on a disk during clean operation

We have windows 2008 enterprise server and one of the logical disks D: is missing. On the device manager , whenever we open the window, it asks to choose for MBr or GPT, but choosing neither would ...
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1answer
19 views

Is it possible to update stripe-width on an existing, and used, ext4 fs?

I have a RAID 5 with 5 3TB drives (8 in few weeks), on a Debian. There is only one ext4 partition on it, using all the space available. Actually, due to origins of the RAID (4 drives), the ext4 fs ...
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2answers
96 views

How to recover from raid 5 failure of 2 disks with tw_cli?

I have hardware raid 5 of 12 disks, 2 of them died and the data is not accessible anymore. I was told that even though 2 disks died, some of the data might be recoverable. My hosting provider replaced ...
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80 views

Boot from RAID with PERC H310 on Dell PowerEdge R520

I'm trying to install an OS on an R520 with the PERC H310 RAID controller and set up two physical drives as a virtual drive with RAID-1. However I can't select that virtual drive in the boot sequence ...
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2answers
73 views

Is it a good idea to use two different SSDs in RAID1? (to avoid both drives failing at the same time because of some manufacturing bug)

I'm building a new server here at university and I suggested that we use two different SSDs in RAID 1 (mirror) to avoid both drives failing at the same time because of some inherent manufacturing ...
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1answer
56 views

Does the SAS Expander / Backplane matter?

If I am buying some used servers with 24-25x SAS that I hope to someday upgrade from 6Gb/s to 12Gb/s RAID, do I need to be concerned at all with the backplane that the drives are plugging into not ...
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1answer
21 views

How to Mounting RAID0 EBS Volumes after reboot on EC2?

I've already attached two volumes to my EC2 instance and configured RAID0 for them. After a reboot, the volumes didn't re-attach. I thought I had configured them to attach on reboot in fstab but they ...
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1answer
51 views

Linux: Rebuilding software Raid 1 fails when adding partition

I had an issue yesterday with a software Raid, where one disk had to be replaced. I removed the partitions from the array using mdadm /dev/mdx -r /dev/sdbx After the failed drive has been replaced ...
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1answer
26 views

RAID 5 Online Capacity Expansion sector size changed

I just started RAID 5 Online Capacity Expansion, and noticed sector size went form 4K to 512B. Could this be a problem?`I did not a have a sector size option when adding the disk.. Running on ...
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1answer
97 views

Optimal configuration with Synology as HA iSCSI backend for vSphere

I'm looking into purchasing a new storage backend for our VMware vSphere Essentials package. We have 3 ESXi hosts, currently mainly using DAS. The goal is to upgrade to Essentials Plus this year, to ...
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1answer
22 views

Raid-5 Linux Software array, 3 drives “removed”

I have a raid array with several drives marked as removed. I want to add them back in, but am not sure how to do so. [root@tera2 ~]# mdadm --detail /dev/md3 /dev/md3: Version : 1.2 ...