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Questions tagged [raid10]

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

Minimum disks needed for RAID 10 is 4.

When using RAID 10, 2 RAID 1 volumes are created and then these 2 volumes are put in RAID 0 mode.

Do not confuse this with RAID 01, which creates 2 RAID 0 volumes and then mirrors them. RAID10 layout

Linux MD RAID10 is a non-standard level that can permits setting up unusual layouts beyond what is possible with the standard RAID10. MD RAID10 requires a minimum of only two drives.

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RAID 10 or RAID 1 x 2 for Hyper-V with AD, EXCHANGE on Windows 2008 R2

We have 2 servers which have 6 SATA 7200 disks inside (each). We want to configure both servers so that they will have Window Server 2008 R2 Enterprise installed and on top of it Exchange 2010 x2 (for 300 people) as one virtual machine and AD x2 as…
MadBoy
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Optimizing ext2 filesystem for use on LVM + RAID device? Stride, stripe-width, LVM IO size considerations

I'm building a new database server and am trying to make sure I have the setup as correct as possible. The database storage is 22x 15.7k RPM Western Digital SAS drives in RAID10, in an external SAS enclosure with two RAID controllers. Initially, I…
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Using Linux LVM, can I change the number of stripes and "rebalance" the logical volume?

I created a RAID10 by adding two RAID1 md devices as physical volumes to a volume group. Unfortunately it looks like I forgot to specify the number of stripes when I created the logical volumes (it was late): PV VG Fmt Attr PSize …
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RAIDZ vs RAID1+0

Hi guys I just got 4 SSDs for my FreeNAS box. This server is only used to serve a single iSCSI extent to my Citrix XenServer pool and was wondering if I should setup them up in a RAIDZ or a RAID 1+0 configuration. This isn't used for anything in…
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What are the advantages and disadvantages of constructing an mdam array from whole disks vs. partitions?

Let's say I've got six identical drives and I'm going to use them all in a RAID10,f2 array constructed using mdadm. I've always put a single partition on each disk and constructed the array from /dev/sd[bcdefg]1 rather than the whole disk. But, I'm…
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6 Samsung 860 EVO SSDs running RAID-10 with an LSI-9260 controller TBW

I am getting ready to implement a RAID-10 config with 6 Samsung 860 EVO 500gb SSDs. They will be attached to an LSI 9260-8i controller. The specs for the SSDs lifespan read 300TBW. Q1 - Can anyone verify if I would be correct to say that the…
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RAID 10 Configuration Settings with different disks

I have just started configuring a server with 4 SSD drives. Each drive pair has the same capacity, but not the same throughout the 4 disks. I want to use RAID 10, and I have tried different configurations in the Megaraid BIOS to see what would be…
Miguel Mesquita Alfaiate
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mdadm: Resume initial sync

I have a new md RAID10 that I created (on a Synology DS416slim, which is besides the point), which was in the process of initial sync: root@ds416slim:~# cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md2 :…
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Add btrfs devices to raid1 array, increasing total size

I have a btrfs array comprising of two 2TB disks in raid 1. I am running out of space, and I want to add two 3TB disks that I have lying around. The final setup will be 2x2TB+2x3TB drives. One drive failure redundancy is sufficient for me (the data…
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Degraded RAID10 Array?

Earlier today I received an automated email from mdadm monitor with the following: This is an automatically generated mail message from mdadm running on server This is an automatically generated mail message from mdadm running on server A Fail…
BrokenCode
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Can't get my RAID array out of degraded mode

I've got a 4-drive RAID 10 array that has just had a drive failure. I ignorantly have never practiced how to recover from a failure (I'm a programmer, just keeping this server as a hobbyist) so I'm having to learn this all the hard way right now. I…
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mdadm: Convert RAID10 to RAID1

The machine in question is equipped with 4x ssd, and running Debian wheezy 7.8, linux kernel 3.2.0-4, mdadm v3.2.5. Currently I'm using a RAID10 consisting of all these ssd. I've to increase the storage capacity, ssd are to expensive for this, and…
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Software RAID 10 not any faster than s/w RAID 5 on Ubuntu 14.04 box, why?

We are doing some tests on a new database server with 4 x 240 GB SSD disks. From what I have read RAID 10 should be faster than RAID 5 with the same "one-disk loss ok" redundancy. However when testing with bonnie++ it seems the RAID 10 isn't any…
David Tinker
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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 will be accessing the array over 8Gb FC with fully…
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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 came up with nothing about what this means. Does…
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