Tagged Questions

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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36 views

mdadm: can't remove broken drive from raid1

I have a ubuntu server Ubuntu 12.04.5 LTS (GNU/Linux 3.2.0-34-generic x86_64) that uses a software raid with 2 physical drives. Apparently, one drive is unresponsive, and I try to remove it from ...
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27 views

RAID controller shows 2 arrays using the same disks

We have a server with a 3ware RAID controller that went into read-only mode today due to an aborted ext4 journal. I checked the RAID status and found the following strange configuration: //host> ...
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1answer
37 views

Max Size of Disks Supported by Controller

I am interested in purchasing (second hand) a Dell Poweredge 2950 2nd Gen server. However, the specs say it has a max storage size of 4.5tb. I am wondering if this means just what is available to ...
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3answers
211 views

Configuring RAID in HP Proliant ML350e Gen8 [closed]

We have purchased two stock HP ML350e Gen8 servers. Ubuntu 12.04 is to be installed in those. The stock, base unit have provision for 6 hard disks for creating RAID in which, one is filled with 500GB ...
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1answer
65 views

Disabling damaged RAID 1 to read from healthy HDD

One of the HDDs in my software RAID 1 on a dedicated server is damaged. The customer support is slow to respond. I would like to transfer all data I need to another server, but file access is ...
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0answers
43 views

Intel RAID 1 states changes during install FreeBSD 10

I working on my all servers with FreeBSD 7.x / 8.x on mainboards with Intel RAID 1. I tied to install FreeBSD 10 on machine with Intel Z97 chipset and RAID 1 (mirror). During install process, all RAID ...
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0answers
41 views

How to reinstall the configuration utility for perc h310?

I am using Dell perc h310 raid controller. To fix some firmware issue, I run the following command. > megarec -writesbr 0 sbrempty.bin > megarec -cleanflash 0 After that, I can no longer ...
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1answer
35 views

migrate from raid 5+1 (spare) to raid 50 without losing data on hp p420i smart array

i have a raid 5+1(spare) with 8 disk of 1TB each one. my controller is hp p420i. i want add to my server another new array 5+1(spare) with other new 8 disk to build one array in raid 50 whithout lose ...
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1answer
86 views

Is RAID50 OK for a fileserver?

We have a new storage array consisting of 24 x 600GB 10K SAS disks arriving next week, and I'm trying to decide how best to carve up the available space for our 3-node VMware vSphere cluster which ...
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0answers
52 views

RAID0 : best chunk size for fileserver with average 650KB files

I found out that my server(linux Ubuntu Server 14.04) has probably a to high chunk size for the RAID0, or atleast I think this is an performance issue... The current chunk size is 512K with 4 disk of ...
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1answer
33 views

Running RAID 6 with a smaller drive

It looks like one of my hard drives failed in our RAID 6 (4 x 2TB) configuration. Unfortunately, I only have immediate access to a 1TB drive. Would there be an issue with temporarily replacing the 2TB ...
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2answers
56 views

off-site backup strategy for small local tower server

I am a computational biologist working for a small startup tasked with setting up a local implementation of a small tower server (if it matters, I'm looking into getting a PowerEdge T620 or similar) ...
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1answer
37 views

How to enable SAS-12 on LSI 9361 RAID controller

By default, this SAS-12 controller runs with SAS-12 SSDs at SAS-6 speeds. How to unlock SAS-12?
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1answer
18 views

9650SE-4LPML RAID Controller BIOs not showing HDDs

I've got a fresh server put together with a 9650SE-4LPML controller card in it with the intention of setting up RAID 1 with two 2TB HDDS. When I boot up and go into the RAID controller BIOs, the ...
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0answers
51 views

Slow ext4 read performance on 24-drive hardware RAID6

I have a RAID6 configuration spanned over 24 drives (12x directly attached to the RAID card, 12x via external SAS) running on an ARECA ARC-1880IX-12 (fw V1.51 2012-07-04). The RAID makes up one single ...
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1answer
26 views

MDADM - Raid 1 - Change a disk with a smaller one

I have a Ubuntu server with the operating system installed on a raid1 created with two 500GB devices. the second drive failed. I now how to replace it, but my goal now is to move the operating system ...
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0answers
17 views

BIOS ORCA Conflict

I have an HP raid controller that tries to run ORCA while the motherboard is running its BIOS startup sequence. When a drive is connected, the BIOS freezes and beeps sequentially. When F8 is pressed ...
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0answers
78 views

remote raid config/monitor with idrac enterprise?

I have two new machines t620 with both h710's and h800's (each connected to md1200's). iDRAC sees in the inventory the md1200 and h800 and the disks but the storage management section of idrac does ...
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2answers
537 views

SATA 7.2K HD Suitable for File Server

Just discussing a new Server with a client and they are insisting on using two 3Tb 7.2K SATA Driver in RAID 1. I wanted to get them 5 15K SAS Drives in RAID 5. Can anyone tell me what the true speed ...
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2answers
63 views

Can I take a mirrored raid drive and use it in another machine

I have about a dozen low end servers of varying makes and models and most have mirrored raid. I'm a bit confused about whether after a disaster (that hasn't harmed the drives) can I can take a drive ...
2
votes
1answer
218 views

Cannot install grub, segmentation fault, unable to identify filesystem, superfluous RAID member, found two disks with same index — Debian 7

A server was recently transported from location A to B, a long journey that took six months. Things have gone wrong due to nothing being labeled prior to shipment. Yes, I know --- it was done by ...
3
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1answer
173 views

Is there any downtime when expanding a volume on an iSCSI setup using Synology Hybrid RAID?

The subject sums up the scenario. I believe the answer is there is no downtime but the system might simply be slower during the rebuild. Which is fine. But if there is downtime, how long? A small blip ...
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0answers
28 views

mdadm - unable to reconstruct the raid1

When restarting my server, it (sometimes) fails to reconstruct my RAID-1 array (2 disks). My server, a 10-year-old computer, often changes sda into sdb or sdc which seems to annoy mdadm. When it ...
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0answers
34 views

Resizing a software RAID remotely, no LVM, / partition

I have a server that has a software RAID without LVM. That is only mdadm. There are the partitions /dev/sda2 and /dev/sdb2 which form /dev/md2. There is also a lot of space after both /dev/sda2 and ...
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0answers
107 views

mdadm RAID0 array recovery

I have a Linux file server with two 12-disk MD1000 disk arrays attached to a RAID controller. Unfortunately, a power blip has caused a loss of configuration data on the RAID controller and it is now ...
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1answer
108 views

What to do when raid 0 errer: Following Arrays have missing required members and cannot be … Array#0-RAID-0 [closed]

here are the tried status: It is a raid 0 configuration and have 2 disks. When using IBM ServeRAID Configuration Utility, there are three options: 1. Array Configuration Utility : see below 2. ...
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1answer
43 views

lvm and hardware raid: hardware raid 5 and raid 1 in single volume group?

I have a system with pre configured hardware RAID. It has 2 disks in a RAID1 configuration. It has a further 6 disks in a RAID5 configuration. The 6 disk RAID5 is split (by the hardware) to look like ...
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votes
1answer
58 views

What is a good new server setup [closed]

Currently we have a server with several functions: domain controller, SQL server, WSUS server, file server, print server, exchange server, backup exec And in addition we still have an old server with ...
0
votes
1answer
40 views

Hot swapping RAID 1 from data center to office

We have a NAS in our data center that we use for backups and application data. It has the ability to have an external USB hard drive connected to it and all data can be backed up to that drive. Here ...
0
votes
1answer
47 views

Why I am the raid configuration tool is now allowing me to create RAID 10?

I have an older dell power edge 6800 server. I have upgraded it a bit and I want to utilize it. So I wadded some ram and some drives. it currently has 12 drives. 2 @ (146gb) 10 @ (300 gb) I ...
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2answers
2k views

Trouble Installing Windows Server 2008 on Dell PowerEdge R720 w/ PERC H710 Mini

Just picked up a Dell PowerEdge R720. I created a virtual disk with the PERC H710 Mini BIOS Configuration Utility 4.03-0002 and configured it for RAID 1. When I then go to try to install Windows ...
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2answers
38 views

Adding second RAID controller to a motherboard with onboard RAID controller [closed]

One of our server ASUS M4N78AM motherboard that comes with an onboard RAID controller. We have already utilised it and are running out of space. Would it be possible to install an additional RAID ...
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votes
1answer
95 views

Find RAID controller under Linux [closed]

I have been trying to find the RAID controller for good purpose. I need to find the right driver that works with the RAID controller. I can assure you i have a raid system in my server, here is an ...
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votes
0answers
41 views

mdadm reattached a failed drive all by itself

I have 2 drives setup in mdadm mirroring (3 partitions on each drive). Last week the second drive (sdb) dropped out of the array because of some I/O errors I am still investigating. After a server ...
0
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0answers
468 views

smartctl error end_request: I/O error, dev sdb, sector

I have a Scientific Linux 6.5 server with a RAID with SSD disks. I see several error on dmesg file but there is no alert or errors provided by the utilities of the RAID controller (LSI controller). ...
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1answer
32 views

External bitmap concerns

I am considering adding an external bitmap to my mdadm RAID6. The benefits seem absolutely incredible in terms of rebuild time but I do have some concerns. I didn't plan for it so I don't have much ...
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1answer
84 views

Partitioning SSD and HDD in Linux NAS [closed]

There is a computer with four 2.7 TB hard disks, under control of Intel Rapid Storage Technology. And one 120GB SSD. We need to use it to store some data that we are collecting and computing. I think ...
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0answers
170 views

MegaCli shows “Firmware state: Failed” on new HDD

Here is the part of -PDList -a0 result: Enclosure Device ID: 252 Slot Number: 4 Drive's position: DiskGroup: 0, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 12 Sequence Number: 3 Media Error ...
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votes
1answer
88 views

Mac Pro says RAID degraded but all drives showing green status

OSX 10.9 - RAID Utility says RAID array is degraded but all drives are showing green All started after error log Drive 3:5000c5004e189ddf missing - Previous drive status was inuse Now getting ...
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2answers
123 views

Unsupported Storage Connection Detected on HP DL380 Gen8

I'm hoping this is the right place to ask. I recently received a new HL DL380 Gen8 server, on which I want to install Server 2012 R2 via Intelligent Provisioning. According to the specifications, ...
0
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2answers
139 views

Getting an LSI SAS1064e to recognise new drives

I have an IBM x3200 M3 server running SBS2011. This server has an LSI SAS1063e controller (the basic BR10il RAID controller that comes with that system). Already existing was a RAID1 array of two ...
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votes
1answer
34 views

Intelligent Volume Management [closed]

I'm looking for a software solution that could present a single disk volume to me that's backed by some sort of intelligent disk manager. In my ideal use case I'd be able to create the volume from ...
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votes
1answer
80 views

Real Time Data Mirroring in Linux Servers [closed]

Which are the different techniques available for real time data mirroring / backup of full server to restore it from a entire system crash? Is it better to purchase a separate server for data ...
1
vote
1answer
72 views

Is There Anyway to Undo a Quick Initialize from a Perc6/i VD?

I stupidly fast initialized an existing Raid 5 Array Virtual disk with 10 Virtual Machines after creating a new Raid 5 Array. The VDs switched order on the list of the Perc Controller. According to ...
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votes
1answer
50 views

Hdd for server, will it work? [closed]

i have a server : IBM System x3250 M3 its have 2 HDD slots, but currently only have 1 HDD, that is : HDD 500 TB Hotplug, sata, with part number 9CA154-176 i want to add one more HDD, but i only ...
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2answers
43 views

RAID card monitoring from Debian OS

We have a custom built Debain OS server with this raid card. Is there anything we can do from the OS side to monitor the raid virtual disks? A few weeks ago we had a raid degrade and did not know ...
0
votes
1answer
29 views

MDADM remove drive during recovery

I would like to know that can I remove a drive during a recovery process from a RAID1 array: What happend is that SDD had bad sectors, I removed it with mdadm --manage /dev/md0 --fail /dev/sdd1 ...
0
votes
1answer
2k views

Configuring RAID1 on HP Proliant Microserver N54L / Ubuntu 14.04.1 LTS [duplicate]

I've bought a N54L and fitted two 3GB drives. Keen to get set up with RAID1. BIOS: SATA controller mode set to "RAID" RAID Option ROM utility: both physical drives set up as one logical drive When ...
0
votes
1answer
66 views

Using Seagate 3TB drives with a Dell PERC 710 - do I have to worry about align and sector size?

I'm going to setup our new server with 8 3TB HDD from Seagate. They come, as far as I know, internally with 4K sectors. I've run this past weekend some burn-in tests on the disks, before setting them ...
1
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1answer
58 views

First 500MB of RAID6 array is wiped, how to recover?

We have a RAID6 array with 12 disks on a 3ware 9650SE-12ML controller. An engineer of our server provider issued this command by mistake: sudo dd if=/dev/zero of=/dev/sde bs=1M count=500; sync; ...