Topic: Extra HDD with Redundancy

[darmasanthi]

Hi All,
I've been running SME 7 with late updated (SME 7.6), until today is running okay
the server are already have RAID 1, its working fine

Now, i need to have an extra HDD for iBays with redundancy, is that possible?

please kindly give some direction,
since i can not find on the forums for this question

thank you,
darmasanthi

[Stefano]

seems like you forgot to take a look at the wiki: http://wiki.contribs.org/AddExtraHardDisk

HTH

[darmasanthi]

seems like you forgot to take a look at the wiki: http://wiki.contribs.org/AddExtraHardDisk

HTH

Dear Stefano,
I really do read http://wiki.contribs.org/AddExtraHardDisk,
but, if i am not miss taken.
on that contrib only inform to Add an Extra HDD with no RAID support,
and to add EXTRA HDD with RAID 1.

in my case is,
i already have RAID 1 using 2x1TB HDD,
and now i want to add new additional HDD with 2x1TB with RAID 1 also,
and the new 2x1TB HDD will be acct as new ibays

how the step and how to process ?

regards,
gede

[Stefano]

please re-read starting from here: http://wiki.contribs.org/AddExtraHardDisk#Additional_steps_to_create_a_raid_array_from_multiple_disks

the wiki page will tell you howto create a raid array and then mount it..

[Jean-Philippe Pialasse]

i also suggest if you want to keep it simple replace you present drives with the new one and ezpand array, this way you will only have one raid to manage, and only one pair of drive ( plus maybe a spare one).

It is way easier to manage on long term.

Plus your whole drive will be recent , thus less chance to die.

http://wiki.contribs.org/Raid#Upgrading_the_Hard_Drive_Size

this works for sure on default installation using lvm over raid ( but need 4 drives, two old ones and two new one, with two reboot after swapping one drive at a time then sync raid )

[darmasanthi]

i also suggest if you want to keep it simple replace you present drives with the new one and ezpand array, this way you will only have one raid to manage, and only one pair of drive ( plus maybe a spare one).

It is way easier to manage on long term.

Plus your whole drive will be recent , thus less chance to die.

http://wiki.contribs.org/Raid#Upgrading_the_Hard_Drive_Size

this works for sure on default installation using lvm over raid ( but need 4 drives, two old ones and two new one, with two reboot after swapping one drive at a time then sync raid )

in my case is to add a new pair of raid 1, that special purpose for ibays only,
i am so confuse, what is the step to add other pair of array.
since in my case, i have the pair of RAID 1 already

rgds,
darmasanthi

[janet]

darmasanthi

I agree also that you should NOT have two RAID1 arrays in your sme server as doing so just complicates ongoing maintenance. The gain of having your ibays on seperate disks is small compared to having system files & ibays on one pair of RAID1 disks, but you introduce a lot of complications.

Keep it simple put everything on one RAID1 array and have really good backups with rotating disks (daily ideally) and test your whole backup & restore sequence to ensure you can rebuild your server in the event of a catastrophic failure.

[Jean-Philippe Pialasse]

in my case is to add a new pair of raid 1, that special purpose for ibays only,
i am so confuse, what is the step to add other pair of array.
since in my case, i have the pair of RAID 1 already

rgds,
darmasanthi

Yes i have understand what you planned to do, but I also understand, and you just confirmed, that you are not comfortable with raid.... so i can only advise you a last time to keep it simple by keeping only the default SME raid arrays on your machine. If you are not familiar with RAID, it will be really easier for you to just grow your whole volume instead to be deal with another RAID and be sure it is mounted on startup. Adding the system files on your new drives will not use that much space, and it will be so easier to administer.


Out of this warning , as repeated Mary, if you want to add the extra array just follow the how to Stefano pointed to you.

[janet]

darmasanthi

Sorry I accidently edited my earlier post rather than reposting.
My comments were about identifying your drives. I can repost them if needed, let me know.

You would be better off in my opinion getting 2 x 2Tb disks & growing the existing 1Tb array to 2Tb. Instructions are in the RAID howto.

If you do continue on your stated path of adding a second RAID1 1Tb array I think you will have problems when you upgrade from sme7.6 to sme8.0, so I suggest you do the upgrade to sme8.0 BEFORE adding the second RAID1 array.

[darmasanthi]

darmasanthi

Sorry I accidently edited my earlier post rather than reposting.
My comments were about identifying your drives. I can repost them if needed, let me know.

You would be better off in my opinion getting 2 x 2Tb disks & growing the existing 1Tb array to 2Tb. Instructions are in the RAID howto.

If you do continue on your stated path of adding a second RAID1 1Tb array I think you will have problems when you upgrade from sme7.6 to sme8.0, so I suggest you do the upgrade to sme8.0 BEFORE adding the second RAID1 array.

Yes mary,
that is my plan, firstly i have to upgrade to sme 8.0,
than i will add another raid array

thank you for kindly information

regards,
darmasanthi

[Jean-Philippe Pialasse]

and as usual, full backup prior to upgrade.
disconnect drive with backup before upgrading.