VOLUME MANAGER & RAID
=======================
1.Volume Types:
RAID 0
Concatenation or stripe
RAID 1
mirror
RAID 5
Stripting with Parity
2. Soft partitions - LARGE STORAGES
3. Hot Spare pools - Spare storage to use when Raid1 or 5 has failed
4. State datebase Replica - Must be created to created volumes
5. Data sets - Used for Clustering Solaris / failover
Can not create volumes using format
HOW TO CREATE SDR
wbem service should be running
check using,
/etc/init.d/init.wben status
running on port 898
which smc
smc
This computer>Storage>Enhanced storage
[supply root password]
Volumes Hotsparepool SDR datasets
mount
df
GO TO SDR
Action>create replica
Diskset > do nothing >> NEXT
Slices ...
select slice is not mounted in MOUNT Command
IF not present Create few from format command
run smc again
refresh
c0t1d0s0 and c0t1d0s1
select 2 slices
8192 x 2
Select one if you want
Once you have two SDR created check from SDR
CREATING RAID0
==============
c0t1d0s0
c0t2d0s0
Make sure Two disks/slices have SDR
smc
Volumes > Create new volume
Don't create replica
Concatetination RAID0
NOTE: it writes data one of one, only when first is full
STRIPE RAID0
Note: It writes both disks/slices togather (for performances)
Select STRIPE RAID0
volume name d0
will create /dev/md/dsk/d0
SELECT both slices that you have created
NOTE : SAME SIZE in Stripe
next
NO HOT SPARE POOL
next
Command in CMD:
/usr/sbin/metainit d0 1 2 c0t1d0s0 c0t2d0s0
finish
Check RAID0 of d0 in volumes
Right click and properties ... Show..
To format
newfs /dev/md/rdsk/d0
mkdir /raid1
mount /dev/md/dsk/d0 /raid1
df -h
gedit /etc/vfstab
/dev/md/dsk/d0 /dev/md/rdsk/d0 /raid1 ufs 2 yes -
save and exit
properties of SDR
you must see a u
active and up to date
CREATING RAID 1 (Mirror):
======================
umount /raid1
smc
delete last created RAID0
Volume>Create volume
Follow same wizard
Select RAID1 (Mirror)
No hot spare pool
Command line tool,
metainit d0 1 1 c0t1d0s0
NOTE: 1 slice only
next next finish
refresh
Follow same step for one
Stripe 0
d1
command line tool,
metainit d1 1 1 c0t2d0s0
Now should be able to see two volumes
HOw to create mirror
Create volume:
No SDR
Select : Mirror
d2
d0 and d1 Concatination RAID0
select first for Source
Select Target for destination
READ Option: Round Robin
Write : Paralle
Passnumber:1
next
Command line tool,
metainit d2 -m d0
metattach d2 d1
finish
d2
properties :
Size is half of total amount of space
we can add and deattach sub-mirrors
newfs /dev/md/rdsk/d2
mkdir /mirror
mount /dev/ms/dsk/d2 /mirror
df -h
gedit /etc/vfstab
/dev/md/dsk/d2 /dev/md/rdsk/d2 /mirror ufs 2 yes -
save exit
Creating RAID 5(Stripe with parity):
==========================
Make sure you have three slices
umount /mirror
Delete all volumes
Volume> Create volumes
select RAID5
Volumename:
d0
c0t1d0s0 10gb
c0t1d0s1 10gb
c0t2d0s0 10gb
select three SAME SIZE slices
next
interface 16kb
no Hot spare pool
command line tool,
metainit d0 -r c0t1d0s0 c0t1d0s1 c0t2d0s0
finish
refresh
d0
20gb
10+10+10 = 20 GB in RAID5
****
which metastat
metastat d0
status ....
newfs /dev/md/rdsk/d0
mkdir /raid5
mount /dev/md/dsk/d0 /raid5
gedit /etc/vfstab
/dev/md/dsk/d0 /dev/md/rdsk/d0 /raid5 ufs 2 yes -
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