RAID0 aka striped set (no redundancy)

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1answer
34 views

mdadm: add new device failed for /dev/xvdl as 2: Invalid argument

I have existing RAID0 setup with two disks. I have to add a new drive to it. But when I try to run the following command: mdadm --add /dev/md/customer_upload /dev/xvdl I get an error: mdadm: add ...
1
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2answers
66 views

HP G8 migrate RAID0 to RAID1 with CLI commands

This is a Dynamic Smart Array B120i. The SSA (Smart Storage Administrator) is ver 1.50.4.0 The OS was installed into a single hard disc (bay 1), the SSA reports like RAID 0. Then I add a new hard disc ...
0
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0answers
58 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 ...
0
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2answers
126 views

LSI MegaRaid - Image Drive from Failed RAID

I had a power failure and my LSI MegaRaid 3 disk SAS RAID 0 failed. My attempts to recover the RAID have also failed. I plan to rebuild the array and go with RAID 5 and add another SAS disk. ...
-1
votes
1answer
151 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. ...
2
votes
3answers
788 views

mdadm - Remove disk from RAID0

So, I'd like to know, is is possible to do the following with mdadm: I start with RAID0 configuration on 2 disks: sda and sdb. I would like to add one more disk to array, sdc and move all data from ...
1
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1answer
551 views

DELL FS12-SC PERC 6/i replacement with JBOD support? [closed]

I have 3 DELL FS12-SC servers with a bunch of 3TB drives (issue number 1, the perc 6/i doesn't appear to support 3TB drives). I'm setting up a ceph cluster and need to run the drives in JBOD mode. The ...
1
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2answers
134 views

Check badblocks on RAID-0

Without RAID-0, I usually check bad sectors using this command: fsck -yvckfC -E fragcheck /dev/sdX How to check bad sectors when the harddisk was using RAID-0? should I run it for each drive? ...
6
votes
1answer
539 views

Is it possible to enable RAID 1 on an already in-use HP Proliant DL380 G5

I have a HP Proliant DL380 G5 with two HDDs in RAID 0 (Stripe)(72GB+72GB). It has been running Windows Server for quite a while now and has 30GB of occupied space on a stripted volume. I've now ...
0
votes
1answer
421 views

Upgrade to 3x Samsung SSD EVO in RAID-0 — what type of RAID controller to search for? [closed]

My current configuration is a RAID-0 with three conventional 2TB hard drives. I want to upgrade to three 1TB SSD EVO disks, also in a RAID-0 configuration. Using SiSoftware Sandra, I found out that ...
0
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1answer
40 views

linux raid0 array size

I made linux raid0 with 4 disks (1TB each). mdadm --misc --detail /dev/md0 shows Array Size to be 4TB. But when I mount this shared folder in a windows PC, it says that it has 105 GB size. How can I ...
0
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0answers
39 views

Why are bad superblocks happening

I have Dell MD1000 storage that has 3x 2TB sata hdds (RAID 0, will move to RAID 6 soon) and 90% of time I am reading from it 40-60MBps via webserver. When I want to restart machine I simply stop ...
1
vote
1answer
402 views

Raid Controller not recognizing hdds after removal. Poweredge 6950

I have a Dell Poweredge 6950 running server 2012 with 4 hdds. 80gb raptor (with OS), 2 500gb WD black in raid 0 and a 1tb raptor. I shut off the server, removed the 2 hdds in raid and the 1tb raptor. ...
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votes
2answers
378 views

Hardware RAID0: what happens when a drive fails?

With a hardware-based RAID0, what happens when a drive fails? For example, on brand name servers like HP DL120G7 with HP P410, when running FreeBSD on a zfs with a zpool mirror, or DragonFly BSD with ...
0
votes
1answer
172 views

Raid0 assemble disk again?

Our server recently suffered a disk failure, so our hosting provider put a new Disk in with CentOS so we can login and see if we can recover the data. We had 2 x 120 GB SSD drives in software RAID0 ...
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votes
2answers
173 views

Raid0 IOPS poor performance [closed]

I've set up 8x500gb disks in raid0 on an EBS optimized EC2 instance and I ran iops.py to check the speed, but it seems really slow. Does anyone know if this is normal speeds for raid0? I'd think I'd ...
0
votes
1answer
361 views

How do I set up a VM on Citrix XenServer to run on a Raid0 partition?

I have a dedicated server from a hosting provider that I got with Citrix XenServer 6.2 installed. I've installed XenCenter, and gotten connected. Everything seems easy enough until I try to create a ...
0
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0answers
96 views

Reconfigure from Raid0 to Raid1, is it possible?

currently I have Fujitsu tx140 s1p servers, one Tower and one Rack. They are both running with the same hardware, configures the same way, so I'll just ask one Q for both. They have an motherboard ...
0
votes
1answer
142 views

re-mount two old disk from raid0 setup to recover data

I had setup two 500gb disk in RAID0 on my server, but recently suffered a hard disk failure (saw a S.M.A.R.T error on the HDD at boot). My host has put 2 new disk in RAID-0 again (re-installed the OS) ...
0
votes
2answers
407 views

Is it possible to change disk in RAID0 array of Intel Rapid Storage Tehnology?

My BIOS started to report red line with error for one of 2 drives in RAID0 array during boot. But file system appears to be working without any visible problems, so I was able to make system image and ...
2
votes
0answers
132 views

FreeBSD raid issue

One of my machines (FreeBSD) has lost its raid (0/ stripe). If I go [root@torry /usr/home/bclark]# gstripe list Geom name: st0 State: UP Status: Total=3, Online=3 Type: AUTOMATIC Stripesize: 65536 ...
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4answers
2k views

What is a single drive RAID 0 array?

My understanding of RAID 0 is that the data is split and striped across all of the drives in the array. If there is only one drive in the array, then what is the point of a single drive RAID 0 array ...
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2answers
146 views

How do RAID 0 Offers improved i/0? [duplicate]

Possible Duplicate: What are the different widely used RAID levels and when should I consider them? I wonder how RAID 0 offers better i/o. If i am not wrong in RAID 0 data gets split and ...
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votes
1answer
139 views

Software raid 0 with six disks performance

I have some problems with disk performance. I have 6 x WD 500Gb RE4 disks. Each disk gives 135Mb/sec throughput. All measurements are made with hdparm with options "-tT" (I know that it is just ...
0
votes
1answer
206 views

Optimized raid 0 configuration for Amazon EC2 hi1.4xlarge

How do I know what is the best configuration for RAID 0 (mdadm create options) between the to ephemeral drives?
1
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1answer
168 views

Is this infrastructure safe for scaling EBS online?

Our application uses EBS to store data. The storage requirement of the application grows rapidly as users signup. We need to do it online so that users don't experience downtime with the application. ...
5
votes
4answers
4k views

High iowait on Amazon EC2 MySQL instance with EBS volume

We have a MySQL server running on an Amazon EC2 c1.medium instance relying on a single EBS volume using the ext3 filesystem for storage. This MySQL server is queried ~500/ps by several applications ...
0
votes
1answer
73 views

RAID 1+0 redundancy and data-loss recovery capability against RAID 1

I have a HP ProLiant server with two SCSI drives. I wanted to set up a RAID 1 array but the RAID configurator only allowed me a RAID 0 or a RAID 1+0 array. When either of my drive fails can I recover ...
0
votes
1answer
579 views

identifying and cloning the superblock of a raid0 mdadm v0.90 array

/dev/sdb13 174706938 976768064 401030563+ fd Linux raid autodetect The size of that partition is 802061126 sectors. From what i read - mdadm should have placed the actual superblock ...
2
votes
1answer
283 views

FreeBSD vinum striped (RAID0) volume - performance issues

I've experimented with different striped volumes in vinum under FreeBSD 8.2-release. I have current hardware (Intel i5 processor, adequate MB and 8GB RAM). My test-setup consists of 2 or 4 disks in a ...
0
votes
1answer
801 views

Windows 2008 R2 raid 0 over hardware raid 5

I am consider using windows raid 0 and raid 1 over two hardware 4x2tb raid 5 arrays. (thinking Seagate green drives). 2x Rocketraid 2680 controller but that could easily change. So, that would give ...
0
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1answer
203 views

mdadm Build legacy array with 512-byte chunk

I'm attempting to build an array using mdadm. The array has 512-byte (not kibibyte) sized stripes. Because mdadm accepts arguments to chunk in kibibytes, not in bytes, I have been unable to build ...
2
votes
1answer
798 views

Maximum size of a RAID0 on a HP Proliant DL380 with a Smart Array 410i controller?

I've been tasked with buying a server that needs a ton of storage in a RAID0 (in the 8-12TB range). Since I know nothing about RAID controllers, I figured I could just put 4x2TB into a RAID0 array and ...
1
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4answers
129 views

Linux RAID0 - relocating member disk

I've got an issue I would rather handle with the array online - I am using RAID0 for temporary video storage - data that is low-cost to restore, but that is used frequently. The software array looks ...
1
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1answer
82 views

Script to automate Raid0 on Windows Server 2008

Could someone point me to a script that I can run upon startup to create a Raid0 drive on windows server 2008. The inputs would be the drive letters of two drives to use for the array.
2
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3answers
1k views

How to make a byte for byte copy of a drive? [duplicate]

Possible Duplicate: Using DD for disk cloning What's the easiest and most reliable, risk free, way of making an exact copy of a hard drive? We have a drive that's been messed up by someone ...
0
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2answers
135 views

Determining Raid Disk Set

Update Unfortunately looks like the engineer in question had rebuilt the drive we were looking for, and the two sets he thought he had were actually from two completely different machines. I am now ...
2
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5answers
662 views

Recover bad data from RAID-0

I have two hard drives that were setup as RAID-0 and NTFS, one of the hard drives has bad sectors. does anyone know if I ran Spinrite to move those bad sectors, will I still be able to access the ...
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2answers
353 views

is xfs a good raid setup?

I'm using amazon, and there is docs everywhere to use xfs. Is xfs a software based raid? Is it fast?
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2answers
265 views

Opened raid1 in raid0, what now?

I accidentally opened my 1 disk raid1 as raid0 with mdadm --create, and this looks like it overwrote the default raid meta info, and makes my device detected as raid0 with mdadm --assemble --scan. For ...
0
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3answers
3k views

HP Smart Array; Is it possible to convert Raid1 to Raid0 by dropping a failed drive?

I have a server that was running two 60GB drives as a logical RAID1. At some point the second drive was physically removed and the logical drive has been in "Interim Recovery Mode" for several months ...
2
votes
3answers
159 views

HDD RAID0 question

If you have 2 raptor 10k rpm drives in Raid0, can you add another sata (7200prm) drive outside of the RAID or would it have to be inside the RAID? What would be the consequences of adding a 7200 RPM ...
0
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2answers
448 views

remove raid0 from a dell t710 using perc

I got a dell server with 2 physical harddrives that are seen as one, because the system is utilizing raid0. How do we disable this striping, such that we can see two different drives. I'm well aware ...
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3answers
720 views

Mixing RAID0 and RAID1 on the same set of drives

I am soon installing a new pair of drives in one of our machines that exists as a VMWare host box (running VMWare Server at the moment). They are going to be used as a RAID0 array for a couple of ...