Unsolved
This post is more than 5 years old
40 Posts
0
643
Two LUNs on Raid 1/0 or One for Celerra File System
I will create (4) Raid 1/0 Raid Groups (2+2) from 300 GB 15K Drives.
This will be used as a replica target for a 1.5 TB system. Hence, I will use all drives.
My question is do I carve up two luns and balance per Storage Processor or should I just create one per Raid Group and balance per SP as well?
Thanks,
Damian
gbarretoxx1
366 Posts
0
October 26th, 2010 11:00
Hi,
Raid 1/0 on Celerra is only supported with 2 disks ( 1+1 ).
Gustavo Barreto.
idsdtapia
40 Posts
0
October 26th, 2010 11:00
Even with CX4 Storage. I was under the impression we could create 2+2. I created one for testing purposes and it came up as Raid 10 on FC versus Raid 1?
idsdtapia
40 Posts
0
October 26th, 2010 12:00
FYI: This is a gateway.
Here's one:
gbarretoxx1
366 Posts
0
October 26th, 2010 12:00
Yes...
The FC disk devices on Celerra systems with captive CLARiiON CX4 storage are configured into either 8+1 RAID5, 4+1 RAID5, 4+2 RAID6, 6+2 RAID6, 12+2 RAID6 or RAID1/0 (2 disk) disk groups.
If you created a Raid 1/0 with 4 drives and the Celerra was able to recognize it and create dvols, this sounds a little strange to me. The newer codes should have avoided it.
Could please you paste the output of these two commands ?
$ nas_disk -i d12 ( use your dvol number )
id = 12
name = d12
acl = 0
in_use = True
size (MB) = 68427
type = CLSTD
protection= RAID1
stor_id = APM00073700689
stor_dev = 000D
volume_name = d12
storage_profiles = clar_r1
virtually_provisioned = False
mirrored = False
servers = server_2,server_3
server = server_2 addr=c0t1l9
server = server_2 addr=c16t1l9
server = server_3 addr=c0t1l9
server = server_3 addr=c16t1l9
$ /nas/sbin/navicli -h spa getlun 13 -type -disk ( 13 is the converted "stor_dev" value above from hexa to decimal )
RAID Type: RAID1
Bus 0 Enclosure 0 Disk 12
Bus 0 Enclosure 0 Disk 13
Gustavo Barreto.
idsdtapia
40 Posts
0
October 26th, 2010 12:00
RAID Type: RAID1/0
Bus 0 Enclosure 0 Disk 5
Bus 0 Enclosure 0 Disk 6
Bus 0 Enclosure 0 Disk 7
Bus 0 Enclosure 0 Disk 8
idsdtapia
40 Posts
0
October 26th, 2010 12:00
Sure thing:
Let me recreate
gbarretoxx1
366 Posts
0
October 26th, 2010 12:00
I am sorry not asking this first, but what's your NAS code version ?
Also, please run the following script :
###########
for i in `nas_pool -query:"IsUserDefined==False" -fields:Members -format:" %L"`
do
for j in `nas_volume -query:"name==$i" -fields:DiskNames -format:" %L"`
do
nas_disk -query:Name==$j -fields:Name,StorageProfile,Protection \ -format:"%s|%s|%s\n"
done
done
###########
idsdtapia
40 Posts
0
October 26th, 2010 13:00
5.6.45-5
idsdtapia
40 Posts
0
October 26th, 2010 13:00
I ran the commands with the following output:
Done (on both commands)
gbarretoxx1
366 Posts
0
October 26th, 2010 13:00
Hi,
please, two more command outputs :
# nas_storage -c -all
# server_devconfig server_3 -c -s -a
Rainer_EMC
8.6K Posts
0
October 26th, 2010 15:00
My advice would be to use a supported config of four 1+1 RAID1 groups and stripe across them the same way that AVM would
Even if your NAS code right now allows you to use 4+4 it doesn’t mean future codes will. Also its always better to use configs that lots of other customers use