Does mdadm allow to mix sata drives and USB -> sata drives ?

Posted by marc on Server Fault See other posts from Server Fault or by marc
Published on 2010-12-25T15:44:04Z Indexed on 2010/12/25 15:55 UTC
Read the original article Hit count: 258

Filed under:

mdadm

|

usb-sata

Welcome,

I have question, i have working array md5 of 5 drives.

We are running out of space.

Server don't have big usage but it have to be online.

We can't add another controller.

I got idea to buy a USB drive case ?

Does mdadm allow to mix array created on sata drives by controller and virtual usb ?

(we don't boot from mdadm)

But im not sure is this will work ?

Is usb drives are configurated before mdadm demon start ?

Regards

© Server Fault or respective owner

Related posts about mdadm

apt-get update mdadm scary warnings

as seen on Server Fault - Search for 'Server Fault'
Just ran an apt-get update on one of my dedicated servers to be left with a relatively scary warning: Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-2.6.26-2-686-bigmem W: mdadm: the array /dev/md/1 with UUID c622dd79:496607cf:c230666b:5103eba0 W: mdadm:… >>> More
mdadm+zfs vs mdadm+lvm

as seen on Server Fault - Search for 'Server Fault'
This may be a naive question since I'm new to this and I cannot find any results about mdadm+zfs, but after some testing it seems it might work: The use case is a server with RAID6 for some data that is backed-up somewhat infrequently. I think I'm well served by any of ZFS or RAID6. Platform is Linux… >>> More
Upon reboot, Linux software raid fails to include one device of a RAID1 array

as seen on Super User - Search for 'Super User'
One of my four Linux software raid arrays drops one of its two devices when I reboot my system. The other three arrays work fine. I am running RAID1 on kernel version 2.6.32-5-amd64 (Debian Squeeze). Every time I reboot, /dev/md2 comes up with only one device. I can manually add the device by saying… >>> More
Linux software raid fails to include one device for one RAID1 array

as seen on Server Fault - Search for 'Server Fault'
One of my four Linux software raid arrays drops one of its two devices when I reboot my system. The other three arrays work fine. I am running RAID1 on kernel version 2.6.32-5-amd64. Every time I reboot, /dev/md2 comes up with only one device. I can manually add the device by saying $ sudo mdadm /dev/md2… >>> More
What tells initramfs or the Ubuntu Server boot process how to assemble RAID arrays?

as seen on Server Fault - Search for 'Server Fault'
The simple question: how does initramfs know how to assemble mdadm RAID arrays at startup? My problem: I boot my server and get: Gave up waiting for root device. ALERT! /dev/disk/by-uuid/[UUID] does not exist. Dropping to a shell! This happens because /dev/md0 (which is /boot, RAID 1) and /dev/md1… >>> More

Related posts about usb-sata

Does mdadm allow to mix sata drives and USB -> sata drives ?

as seen on Server Fault - Search for 'Server Fault'
Welcome, I have question, i have working array md5 of 5 drives. We are running out of space. Server don't have big usage but it have to be online. We can't add another controller. I got idea to buy a USB drive case ? Does mdadm allow to mix array created on sata drives by controller and virtual… >>> More
what is the fastest way to copy all data to a new larger hard drive?

as seen on Super User - Search for 'Super User'
I was certain this would have been covered before, but I cannot find an answer amongst all the almost-duplicates that come up; sorry if I've missed something obvious. I have a full 320gb disk inside my machine, a new 1tb disk to replace it, and a USB 2.0 chassis. It is only data on a single partition… >>> More
SATA Hard drive not detecting

as seen on Super User - Search for 'Super User'
I have a dead laptop, Trying to recover data from the Hard drive (Sata2) I tried putting the HD in one similar laptop , it's not recognized I got USB-SATA Adapter and plugged the HD , and still the HD is not recognized can you tell me is there any other possible way to get my data back ? >>> More
Unable to Mount Seagate Array from Iomega

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am new to Ubuntu so please be kind! My (Windows based) Iomega Storcentre ix2-200 stopped working, with all my business data upon it. Iomega helpfully told me that I should get Fedora, remove the Seagate hard drives and recover the information by connecting via a USB / SATA cable. First I could… >>> More
How can I connect a SAS drive to USB? [closed]

as seen on Server Fault - Search for 'Server Fault'
I have a Dell T710 with Seagate Cheetah 15k.7 SAS disks. If the T710 motherboard dies, I'll need to resort to one of my nightly off-site backups and salvage the journal/logfile from the SAS disk to bring the backup bang up-to-date. I need a way of reading the healthy-but-inaccessible SAS disc… >>> More