hdd ordering issue,need help.

mtaa · Post by **mtaa** » 2015/07/23 16:59:03

Hi,

i want to use eight 4TB hdds to setup mdadm raid 10,
originally,i use centos 6 to install but fail.
then,i use centos 7 to try.

i setup 8 hdds on the X10SL7-F's lsi 2308 port to install centos 7,

port 0: WD4003FZEX
port 1: ST4000NM0053
port 2: WD4003FZEX
port 3: ST4000NM0053
port 4: WD4003FZEX
port 5: ST4000NM0053
port 6: WD4003FZEX
port 7: ST4000NM0053

i check the bios,it shows the ordering well: bios.jpg

and when booting,it also show the ordering well:booting.jpg

but when installing,no matter how i did,it always does not show as my perfect ordering: install.jpg

i want to ask,how can i let the hdds ordering at centos(install.jpg) the same with my bios/booting ?
by the way,when my certain hdd get issue,
i can track which one get issue and replace it correctly.

thank you.

Post by **TrevorH** » 2015/07/23 17:15:55

Why do you care about what order the drives are seen in? Use UUIDs or labels to deal with them and then you don't need to worry at all.

mtaa · Post by **mtaa** » 2015/07/23 22:14:55

TrevorH wrote:Why do you care about what order the drives are seen in? Use UUIDs or labels to deal with them and then you don't need to worry at all.

Hi,

because i want to do hot swapping,i can more easily to find which hdd get issue.

thank you.

gerald_clark · Post by **gerald_clark** » 2015/07/23 23:11:10

Put stickers on the drives with the UUID.
You can't depend on the position in the cabinet.

Post by **TrevorH** » 2015/07/23 23:20:30

I'd go with stickers too but I'd put the drive serial numbers on them as well.

mtaa · Post by **mtaa** » 2015/07/24 06:01:32

Hi,

because i want to mix one seagate with one wd hdd to do raid1,
and mix the four raid 1 into raid0,
and it will be raid10.

so,i hope the hdds list as the ordering i hope.

thank you.

Post by **TrevorH** » 2015/07/24 09:58:50

It's not advised to mix hard disk types in RAID, they should be the same make and model if at all possible. It'll still work but RAID works best if the drives match.

mtaa · Post by **mtaa** » 2015/07/27 09:15:30

TrevorH wrote:It's not advised to mix hard disk types in RAID, they should be the same make and model if at all possible. It'll still work but RAID works best if the drives match.

ok,i will take care it,because i worry all the same brand hdds fail at the same time.

but who know how to sorting the hdd listing ordering as my expert ?

thank you.

CentOS

hdd ordering issue,need help.

hdd ordering issue,need help.

Re: hdd ordering issue,need help.

Re: hdd ordering issue,need help.

Re: hdd ordering issue,need help.

Re: hdd ordering issue,need help.

Re: hdd ordering issue,need help.

Re: hdd ordering issue,need help.

Re: hdd ordering issue,need help.