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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2
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1answer
201 views

ZFS pool slow sequential read

I have a related question about this problem, but it got too complicated and too big, so I decided I should split up the issue into NFS and local issues. I have also tried asking about this on the zfs-...
1
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2answers
104 views

LSI HBA cards - span a virtual drive across two RAID controllers

I am able to create a virtual drive on one of the RAID controllers, but that virtual drive is isolated to that RAID controller. I setup four (4) eval RAID cards: LSI MegaRAID SAS 9271-8iCC + ...
1
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0answers
157 views

Windows Server 2012 on RAID 1 stuck in Automatic Repair after motherboard change

The motherboard with Intel H87 chipset (with Intel Rapid Storage Technology) stopped working. It was replaced with MBO with H97 chipset. OS and data are in separate RAID 1 configurations. New MBO ...
0
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0answers
16 views

Dell Disk Group Configuration for Microsoft Business intelligence

I'm looking to configure a couple of 12-core 64GB Dell R430s for business intelligence using Microsoft Analysis Services (and SQL Server in the night time). One will be production, and the other will ...
1
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1answer
461 views

LSI replace disk in raid1 with larger drives, how to expand raid to use free space

LSI MegaRAID SAS 9240-8i Situation: 2 - 128GB drives in a raid1 I've replaced each drive, one at a time to let the raid rebuild. The raid now consists of 2 - 256GB drives in raid1 Filesystem ...
0
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0answers
113 views

How to reset Areca RAID card built-in SAS expander password?

I just bought used ARC-1882IX-12 card but the seller forgot password to the SAS expander. The web management worked well with default "0000" password. How to reset it ?
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2answers
143 views

HDD in RAID 1 Migration. SmartArray P410i to SmartArray P420i

I have a failed HP ProLiant ML350 Gen6 server (power surge fried the motherboard). It has an embedded SmartArray P410i controller. I also have a HP ProLiant ML350P Gen8 server with an embedded ...
1
vote
1answer
1k views

Partition new HP ProLiant server with Intelligent Provisioning

Trying to install Windows 2012 R2 on a new ProLiant server using Intelligent Provisioning. Using SSA I created a RAID 5 array. IP wants to install the OS on the full drive, I want to create a 150GB ...
0
votes
1answer
99 views

Possible to use internal LSI controllers in HP hosts?

Right now I have a HP ProLiant DL360p Gen8 with two SATA disks in the disk bays. These are the OS disks. I choose SATA disks to bypass the internal raid controller, so ZFS could do the raid. I now ...
0
votes
1answer
321 views

LSI MegaRaid 9260-8i low performance in comparison

I was given the task (aka dumped into my lap) to examine low Read/Write performance on a system running Server 2012 R2 /w HyperV role. The system in question: Lenovo RD340 LSI MegaRaid 9260-8i (no ...
0
votes
0answers
101 views

HP Proliant ML310e Gen8 with Windows 2012 lost RAID data?

I'm having some problems where a client had a fire in the power strip feeding the UPS to their server. When I got there the HP Proliant Gen8 server had been booted and was sitting at a setup dialog ...
0
votes
1answer
689 views

Synology disk mirror SHR or RAID 1

I created a mirrored volume on my Synology DS415+ created with two equal disks. The default mode was Synology Hybrid RAID (SHR) but I see that I could also could have chosen for 'regular' RAID 1. As ...
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votes
1answer
73 views

Removed 2 hard drives in RAID configuration from Dell Server, need to recover data [closed]

My very old Dell server will not boot up, I am pretty sure it's a motherboard issue. So, I removed 2 hard drives when the computer's power was off. I am assuming the drives were in a RAID ...
1
vote
2answers
191 views

Dell Power Edge 2950 SAS RAID configuration

I have been given a Dell Power Edge 2950 by the company I do service work for to use as a backup server. When I first got it there was a message saying "PCIe Training Error Slot 1". I managed to get ...
2
votes
2answers
295 views

How to remove RAID option from HP DL360 Gen 9 for HDFS

I am setting up a brand new DL360 G9 Server for use in a Hadoop cluster proof-of-concept. As HDFS will be taking care of the RAID, I need to bypass this option in the G9 array controller (Smart Array ...
-2
votes
2answers
288 views

CentOS 6.7 Completely remove RAID. Clode disks and boot from /dev/sda [closed]

I am completely new to Linux. I have inherited a dedicated server hosted somewhere in Germany. The OS is CentOS release 6.7 (Final) 64bit. The server has two 3TB disks in software RAID-1 configuration....
2
votes
1answer
51 views

IBM BladeCenter S storage module

I am new to this forum and have a question I'd like to ask. I have a client who is running a BladeCenter S, which includes a 6-disk Storage Module (44Y1405/44E8057). The problem they have is that ...
-1
votes
1answer
365 views

Ubuntu + ZFS vs Rockstor [closed]

I have a personal fileserver at home with 6 HDs: 1 500 GB one for the OS 1 4 TB one for temporary data four 2 TB ones that we want to configure in some sort of RAID 5 fashion It looks like I have ...
0
votes
0answers
37 views

Need to make change to fstab when read-only

I am configuring RAID and filesystems. I had to create /dev/md1 with RAID devices /dev/sda5 and /dev/sda6 on them. Next I needed to edit /etc/fstab, so that /dev/md1 mounts on boot. I made the ...
2
votes
2answers
197 views

What RAID configuration do I actually have?

So lately I've been playing around with my recently purchased (used server) (HP ProLiant ML330 G6) and I am a bit confused as to the current RAID configuration it has. I did a bit of checking via the ...
1
vote
0answers
137 views

Proliant ML350 G6 - Installing a 2TB drive only recognises it as 250gb and Fails [closed]

I have purchased 2x Seagate Enterprise SATA 2TB 2.5" drives, but when they are loading into 2 new hot plug slots the HP software is only recognising the drives have a capacity of 250gb. I have tested ...
2
votes
2answers
291 views

Best RAID config for Data Backup NAS?

Currently looking in to a NAS backup solution which will primarily be used for storing images of a few employees laptops and also storing some internal data. Most likely going to go with the Synology ...
0
votes
0answers
84 views

Ubuntu MaaS RAID preseeds

I have a maas server/controller and I need to create RAIDs when I commission the nodes via preseed_master config file. The disk configurations would be 3 disk, 2 disk, or more than 3 disk per node. ...
0
votes
1answer
883 views

Proper procedure for installing CentOS on HP DL80

I have a DL80 G9 on which I wish to install CentOS 6.7. I want my master boot partition to be a mirrored RAID 1 logical volume across 2 physical disks. I have additional storage that I will use to ...
7
votes
1answer
149 views

How do I troubleshoot my RAID array?

I just checked into my RAID array this morning and what I got is: $ cat /proc/mdstat Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md1 : active raid1 sdc7[0] ...
0
votes
1answer
82 views

Changing Mirroring RAID disks - HP DL380

I have a DL380 server with raid configured as mirroring with only two harddisks ( 0 and 1) As we lost some files due to a software bug I removed both the HD's ( 0 and 1). Instead I put an old ...
2
votes
2answers
85 views

More Global Spares or dedicated spares

I have 74 x 300GB disk on a HP MSA2324sa. The magic for me is 3 x RAID10 vDisks of 16 drives each. And then 2 x RAID50 vDisks of 10 drives each. That leaves me 6 drives. I could assign 5 dedicated ...
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votes
2answers
65 views

How to Mount Disk from broken USB external Hardware Raid 1 [closed]

I had an external USB 2 RAID 1 (Mirror) with two 2TB disks. The manufacturer is Datacask which is pretty unknown. The chip used is some Silicon Image chip. Out of nowhere, I could not mount the raid ...
2
votes
1answer
115 views

Is there any gain from using multiple files in SQL server for raid-5 configuration?

We are setting up a server with five 240GB ssd as raid-5 configuration into one logical drive. We're planning to partition the logical drive into four drives on windows server. In SQL server, would ...
0
votes
1answer
49 views

RAID 0 arrangement for max IOPS with mechanical drives

We need to run a high number of low-resource VMs concurrently in 2012 R2 Hyper-V. We've experimented with various configurations and using Perfmon.exe for reporting, we've found we're bottlenecking ...
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votes
3answers
267 views

P440 defect, can I replace P440ar

Quick question: I have a HP DL160 Gen 9 server with P440 raidcontroller. ILO reports this one is defective. Disks are OK; after rebooting, the server works for about an hour. I have a P440AR in stock;...
2
votes
2answers
7k views

Install CentOS 7 on HP dl120 gen9 server with b140i raid controller

I'm trying to install CentOS 7 on a HP DL120 gen 9 server with a b140i controller. I have 4 1TB HDD setup in a raid 1+0 and the CentOS installer doesn't seem to recognize the logical drive created ...
0
votes
0answers
126 views

Smartctl output varies; some RAID does not contain attributes

I have run smartctl -a on five different computers (mostly CentOS 7 Linux with smartctl 6.2), and I noticed two styles of smartctl output. Why would it change its output format? One style contains a ...
3
votes
1answer
133 views

Check RAID software: my status

I have an Ubuntu dedicated server and I got a message from my provider saying that one of my disks has en error and that I must "check whether my RAID software is functioning properly" before they ...
0
votes
0answers
120 views

Replace failed disk in RAID 1

two days ago one of my two drives in my software RAID 1 (that was setup using gnome-disks) configuration failed. I could not access the files in the meantime. After short research it seems that I have ...
0
votes
0answers
16 views

Unable to build RAID on BladeServer HS20 8843-2RG

i have a bit of a problem. We had this Blade Server come in a few days ago, with a seemingly failing disk (the OS cried out IO Error all over the place and only booted into emgergency mode). A quick ...
2
votes
2answers
114 views

mdadm fault injection testing with bad blocks or other unrecoverable errors

I recently lost a drive in my RAID array (and got an email from the system warning me of this, which was awfully nice) and after some drive shuffling and swapping in a new drive I'm all safe and ...
0
votes
0answers
112 views

The RAID array shows up as DEGRADED, but all drives are OK

The current RAID controller I am using is an AMCC 3ware 9690SA-8I SAS RAID Controller. I have just received this server unit used, and going into this blind; I have no idea how long it has been this ...
-1
votes
1answer
50 views

Handling the potential risk of writing random bits to storage during power loss with RAID [closed]

Is it possible for a power failure to cause some part of a machine to write one or more random bits to a storage device? Someone proposed the following idea to address such a risk: create multiple ...
0
votes
5answers
409 views

Can I detect hardware RAID infromation from inside Linux?

When I'm inside of Linux, I can get the following information from lsblk (irrelevant drives removed from output): NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 298G 0 disk sdb 8:...
2
votes
2answers
243 views

Slow writes for VM in Xen?

I have a server running Xen and a couple of VMs. I'm trying to set up a RAID array that's dedicated to one of the VMs in particular, which will be used for various storage-intensive purposes. ...
1
vote
0answers
118 views

Fujitsu Primergy RX100 S6 Windows Web Server 2k8 R2 Hard Drives not found

I got a question about our Fujitsu Primergy RX100 S6. We want to install Windows Web Server 2008 R2 on a complete brand new RAID 1. The BIOS finds both of the hard drives and also the virtual disk ...
-1
votes
1answer
105 views

How to configure expander card RES2SV240 in an Intel Server Board S2600WT?

So, I'm trying to configure this expander card into my server. I have an Intel Server Board S2600WT in a R2312WTTYS case, which means I have a backplane in the front with 12 slots, and another ...
3
votes
1answer
288 views

recover highly degraded raid array

I have a Linux RAID6 array (mdadm) composed of 8 disks. 2 disks failed. I replaced them, now I have 2 new empty disks. I would like to rebuild the raid but when I start a raid rebuild, the rebuild ...
0
votes
1answer
49 views

Recently installed RAID already degraded on partition

I set up setting up a new two disk RAID1 which appeared healthy in mdstat. In a few hours, here's what I later saw when I ran cat /proc/mdstat. Personalities : [raid1] md1 : active (auto-read-only) ...
1
vote
0answers
75 views

Proper Steps To Upgrade My Server 2008 R2 Machine From HHD To SSD

I'm working on upgrading a server's hard drive from a standard HHD to an SSD drive. I have cloned the drive with a program called "EaseUS Todo Backup Free 8.6" (which I think does a bunch of extra ...
0
votes
1answer
94 views

When Upgrading My 3.5" HDs To SSD HDs Can I Continue To Still Use RAID 1 (MIRROR)?

I'm upgrading my old 3.5" HDs to a set of SSD HDs. I currently run a RAID 1 (MIRROR) array for the 2 old drives (just in case) and want to know how I should rollout the new SSD drives... I have been ...
2
votes
3answers
96 views

RAID versus Storage Pools

I'm currently developing a requirements specification for a new server and am trying to weigh benefits & pitfalls with available technologies. Our current server uses a RAID-5 disc layout which ...
0
votes
1answer
122 views

Intel RAID controller cannot open BIOS and doesn't recognize hard drives

I recently bought a second-hand Intel RAID controller (SRCSASLS4I) for my Ubuntu server setup (YunoHost actually). I connected 3 hard drives that had previously been used for a software RAID (I did ...
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votes
0answers
148 views

Design of hard drive RAIDs [closed]

My task is to reconfigure a main server that houses the company's applications and data. The server is capable of handling everything. I wanted to find out if anyone has a suggestion on the best ...