RAID 10 is a combination of RAID 1 and RAID 0. RAID 10 can also be referred as RAID 1+0

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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 ...
2
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1answer
22 views

Failing drive in RAID10 array; which degraded state will be least punishing on performance?

Running on LSi 9260-16i, with 16 SAS drives (Seagate Savvio 15k.2). One drive is getting media read errors, so we're going to RMA it out. Which of these is the least performance destroying option in ...
2
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1answer
51 views

Force RAID 1+0 HP Smart Array to rebuild

I have a RAID10 with status "Ready for Rebuild", but how can I force the rebuild? # hpacucli ctrl all show config Smart Array E200 in Slot 0 (Embedded) (sn: PA6C90N9SW82IU) array A (SAS, ...
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1answer
45 views

Mdadm Raid10 - Files corrupt

I have a Raid10 array using software raid on 4*2-tb drives. My OS on this Raid array froze and when restarting my system via Ubuntu-CD i noticed the Raid array was gone. I assembled the raid array ...
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37 views

LVM RAID10 “Won't be synchronised” - What does it mean?

I was creating an LVM RAID 10 across 4 physical volumes (each 3TB) when I got the following error message: WARNING: New raid10 won't be synchronised. Don't read what you didn't write! My googling ...
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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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1answer
28 views

9650SE-8LPML is verifying a RAID 10 unit in odd manner?

I have taken over a server with a 3ware 9650SE-8LPML raid controller, the server has 8 disks and I configured it to be a RAID 10, no spares. My questions is is it normal that when you start the verify ...
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1answer
56 views

RAID 10 and LVM

I have just setup a new SolusVM Xen Node at my DC. I asked them to install CentOS6 with Software RAID 10 and 100GB to root then the remainder to an LVM group for Xen. All in Software RAID 10. The ...
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1answer
293 views

6 times slower disk write in RAID10 on Ubuntu 14.04 after rebuild

OS: Ubuntu 14.04 LTS Software Raid 10: 4x120Gb Intel 530 SSDs Initial tests: 1.2 GB/s Write 5.2 GB/s Read I did some tests to check if everything will go alright with a failed disk: I set as ...
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1answer
74 views

Optimal RAID10 configuration for 8 disks and two volumes?

I have an Open-E file server with 8 SAS disks and a MegaRAID 9271-8i controller and I want to configure two logical RAID10 volumes of identical size. One volume has about 66% write access and 33% read ...
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2answers
1k views

Expand VD in Raid PERC H710, Dell R720 mini

I have purchased Dell R720 server with PERC H710 Raid Controller. Initially I have configured RAID-10 with 6 SAS 300GB Drives. Installed Win2008 R2. Raid10: After deployment I come to add 2 more ...
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1answer
109 views

How to display/define Mirror/Stripping pairs with mdadm

I want to make a standard linux software Raid10 over 4 HDD. The server has 4HDDs, 2 pairs from different vendors in order to avoid batch problems. I want to have the mirror over two different ...
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0answers
43 views

Corrupted parity in the Raid header

Has anyone here experienced a problem with 'corrupted parity in the Raid header'? We regularly find that a Consistency Check on our Raid 1+0 array detects inconsistencies. It has been suggested by ...
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1answer
126 views

4096 and 8192 block size read slower than write? by using lsi 9361-8i RAID10

is it possible that 1024 and 2048 block size read speed is faster than 4096 and 8192 block? I'm using lsi 9361-8i with RAID 10 , with 8 x Kingston E50 250G. result: 1024 = Write: 2,251 MB/s ...
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2answers
132 views

Disk Capacity RAID 1 to RAID 10

I have a 4-bay NAS with two 2TB hard drives in a RAID 1 configuration. I was planning to upgrade it with 2 additional 4TB drives to a RAID 10 configuration. Now the new capacity I will receive with ...
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1answer
60 views

Downside with moving pagefile to different drive

I've been tasked with managing an old Windows 2003 server which will be decommissioned later this year. I just need to keep the server up and running long enough. The space on the server is running ...
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0answers
93 views

Why don't enterprise RAID controllers support migration from RAID 5 to RAID 10?

I've been doing some research on the possibility of live migration from RAID 5 to RAID 10 and I'm curious as to why it seems that most RAID controllers (particularly Dell's PERC controllers) don't ...
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2answers
55 views

Dell T-420 with Perc 310 controller - how do controller channels map to physical drive bays

The Perc 310 has two SAS controller connectors, SAS-A and SAS-B. Each of these supports which has 4 internal mini-SAS, providing a total of eight lanes of PCI Express. Question is how do these two ...
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711 views

Very poor disk performance on KVM node - mdadm raid10

For a long period of time, i'm experiencing performance issues on CentOS servers that are used for KVM virtualization. I'm running software RAID-10 with 4 disks (Seagate ST2000DM001, 2TB, 7200rpm ...
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2answers
1k views

Poor SQL performance on HP ProLiant ML310e Gen8 v2 with raid10

I recently bought HP ProLiant ML310e Gen8 v2 server with 8G's RAM and 4 HP 1TB 6G 7.2k rpm SATA (3.5in) Non-Hot Plug MDL HDD disks. It was surprise to me that HP didn't provide debian drivers for ...
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3answers
191 views

SQL Server 2012 RAID Setup and Performance [closed]

At my company we are in the process of setting up a new SQL Server 2012 box. We have 6 physical drives with 3,000 gigs each. We are considering two different RAID configurations and are wondering ...
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2answers
137 views

Indepedent pairs of RAID 1 is superior to RAID 10

I am rather new to databases. I was reading up on RAID Storage and it seems that the consensus is that RAID 10 is RAID 10 is best is terms of performance and redundancy However at the end ...
2
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1answer
58 views

determine which drive in a raid failed windows server

I'm a volunteer assistant IT guy at a local nonprofit. Over the weekend, we had our main server fail, requiring a reboot. After reboot, we were notified that "a volume initialization is in process." ...
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1answer
82 views

Drawbacks with smaller fdisk partitions, mdadm RAID10, LVM and KVM?

I am setting up a new virtualized server with KVM and LVM. The KVM host and all guests will be installed on a SSD drive. Each guest will have access to a RAID10 array made of 4x3TB sata drives, used ...
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394 views

LSI Cachecade Pro 2.0 with RAID10 SSD Cache?

I'm trying to add a RAID10 SSD Cache to a VD by this command: [root@livecd storcli]# ./storcli64 /c0 add vd cachecade type=r10 drives=252:4,252:5,252:6,252:7 assignvds=0 Controller = 0 Status = ...
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134 views

RAID 1 - IOPS Write Penalty 1 or 2

I keep seeing articles describing the RAID IOPS write penalty for RAID 1 (and RAID 10) as 2. RAID 0 would have a penalty of 1, of course, since every write is simply written to disk. RAID 1 is ...
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221 views

LSI MegaRAID LINUX got Optimal after degradation but strange POST message

Linux server box with LSI MegaRAID controller got degraded. But after some time RAID status changed to Optimal. Adapter 0 -- Virtual Drive Information: Virtual Drive: 0 (Target Id: 0) Name ...
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1answer
164 views

RAID 10 SSD Benchmarks [closed]

I haven't been able to find any benchmarks for the following setup: Intel Cherry 520 SSD x 4 RAID10 with LSI 9260 writeback-cache enabled. I'm looking to get 1.5gbps sequential
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3answers
210 views

RAID10 Without BBU, With UPS

My datacenter says that each rack has primary and backup power on each rack. I assume this means there is a UPS for each server. Therefore, do I have any need of getting a BBU for the following setup? ...
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1answer
68 views

Growing a hardware RAID-10 array

I am interested how to grow a RAID 10 array on Windows SBS 2011 machine? Basically I have added two additional disks, expanded array and now I want to grow my c: filesystem to take advantage of new ...
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935 views

How to move RAID 1 to RAID 1+0

I have two HP disks in RAID 1 (300 Gb), and would like to at 2 additional disks in RAID 1+0 having in total of 600 Gb on C:. I would like to know is it possible to do it using Array Configuration ...
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1answer
261 views

How do I check if server really has RAID 10 enabled?

I have a dedicated server with 4 hdd and RAID 10, with Cent OS 6.4 How can I check if RAID is really enabled. I'm in doubt because on another server with RAID 10 enabled, I can see in /dev sg0 sg1 ...
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50 views

How many Spans for RAID 10 with 4x500GB SAS Physical Disks for Virtualization Server Data part

I'm setting up a PowerEdge R420 as a Hyper-V server. Windows Server 2012 will be on RAID 1 (2x 160GB SSDs) and Data part I would like to put securely on 4x 500GB SAS HDDs. The question is what would ...
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95 views

Does the built-in CentOS software RAID distribute writes?

Will I see a write performance increase going from single disk to CentOS Software RAID10? Any industry estimates on the % increase?
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245 views

Expand Raid 10 set on MegaRAID LSI 9261-8i

I have an existing Raid 10 drive with 8 drives. 4 in each span. I can't figure out how to expand the set by adding two more drives, one to each span. I'm using the MegaCLI command line tool. I ...
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1answer
169 views

Preseed RAID10 does not seem to work

I have this config (excerpt) for my preseed d-i partman-auto/method string raid d-i partman-auto/disk string /dev/sda /dev/sdb /dev/sdc /dev/sdd d-i partman-auto/expert_recipe string \ ...
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1answer
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Concerns of simultaneous failure of SSD Raid1

Since SSD's have a write limit requiring wear leveling one would assume that all things being equal 2 identical SSD drives would wear nearly identically if they mirror data writes. When one drive ...
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1answer
2k views

How to create Raid 10 with megacli

I have OpenFiler storage server. Without installing Windows and MSM, I want to create raid10 array from disks 2 to 21. I have already successfully installed MegaCli to OpenFiler but I'm stuck in ...
3
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3answers
4k views

Configuring RAID 10 using MegaRAID Storage Manager on an LSI 9260 RAID card

Using MegaRAID Storage Manager 13.04 on an LSI 9260 RAID card, which is the correct way to create RAID 10 using 8 drives with maximum redundancy? There appears to be multiple ways to reach the same ...
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1answer
78 views

Fast backup and restore on RAID10

to test a software update on a server with 4 hd in RAID10, I'm going to remove two of the 4 hd to use them again to restore the system to its previous state. The controller is a Smart Array 6400 with ...
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2answers
316 views

Increase the size of software RAID 10

Currently I have 8 disks each of size 32G forming a RAID 10. Now, I want to increase the size of this RAID by adding extra disks. This is a production device so there is already critical data in the ...
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0answers
147 views

What RAID policies should be used for a XenServer host?

I have a server with a PERC6/i card and a RAID-10 array running XenServer 6.1 with 6x VMs, one of which is SBS 2008 and the rest are a mix of file server, video-on-demand and SQL database server. The ...
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3answers
1k views

Convert RAID 5 to RAID 10 without data loss

I have a Windows SBS 2011 server on a Dell R610 with RAID 5 configuration [3 disk]. Is there a way to convert it to RAID 10[4 or 6 disk] without losing anything or needing to re-install the whole OS ...
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317 views

Raid 0, Raid 1, Raid 5, Raid6, Raid 10 Read/Write performance? [duplicate]

Assume a single disk has a baseline of 1W & 1R performance, how does the different RAID configurations behave? My initial guess: Raid 0: 2W 2R Raid 1: 1W 2R Raid 5: ? ? Raid 6: ? ? Raid 10: ...
0
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1answer
55 views

recovering from raid 10 single disk failiure

I got a terastation with 4 disks in raid 10 setup. But one of them failed recently. Instead of inserting the disk and restructuring is it possible to copy the data to another disk outside the ...
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2answers
77 views

upgrade windows server from 2003 to 2008

My PowerEdge 2900 server currently is a windows server 2003 thats configured as a RAID 5 Using PERC 6/i Integrated with 3 750GB Disks. Whats the best way or, the order of steps to upgrade it to ...
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2answers
113 views

server load extremely high trying to diagnose [closed]

The server load is extremely high. I'm trying to diagnose what's going on. Screenshot attached. edit: OS is CentOS 5. Not running anything like plesk or cpanel, etc.. The raid10 has 1 failed ...
0
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1answer
437 views

Capacity Expansion on PERCH700 RAID-10

I have Dell Poweredge R710 server with PERC H700 Integrated RAID controller. Currently there are 4 SAS 300GB disks in RAID-10 array exposing single volume of 600GB. Server is running VMware ESXi 5.1. ...
2
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1answer
74 views

Update RAID 10 NAS storage

I've got a NAS with 4x500GB HDD in RAID 10. I want to change the actual HDDs to others of 1TB capacity, but I want (if possible) to preserve the data without having to copy it outside the NAS. The NAS ...
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One drive failed in my RAID 1+0 array, am I safe to replace it without losing data? [duplicate]

The first drive in my 1+0 RAID array is showing a status of predictive failure. There are two drives in the array; is it safe to replace this without losing any data? I will be replacing it with the ...