SUMMARY: SVM (disksuite) replacing a disk drive correct steps..

Thanks to everyone that replied with suggestions especially Romeo Theriault.
I performed these steps to remove the bad disk drive in the S1 array.
This was the middle drive slot in the S1. The affected submirror was d2
of the d0 mirror.

# metadetach -f d0 d2
# metaclear d2
# metastat -p |grep c3t1d0
This check to see if any metadevices are still left on c3t1d0
# metadb -d c3t1d0s3
This removes any replicas on the affected drive.
# metadb |grep c3t1d0
This check to make sure no replicas are on the affected drive.
# Shut down system and S1 array.
# Remove bad drive and install new one.
# Use format utility to partition the drive exactly like the  other
drive in the  S1.
# metadb -a c3t1d0s3
This addes the replica's.
# metainit d2 1 1 c3t1d0s0
# metattach d0 d2

Below is my original question

I have a 280R with an S1 array attached to it that has 2 drives in it.
According to /var/adm/messages one of the drives in the S1 is failing
and needs to be replaced.

There is only one metadevice mirror on this drive and it's mirrored
to the other disk in the same array. The affected submirror is d2 listed 
below which
is physical disk c3t1d0s0 and so I'll be removing the c3t1d0 disk from
the S1 array.

So I'll be removing that disk and installing a new one. I'm not sure of 
the steps I should
perform do these look right???

d0: Mirror
    Submirror 0: d1
      State: Okay        
    Submirror 1: d2
      State: Okay        
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 104863680 blocks (50 GB)

d1: Submirror of d0
    State: Okay        
    Size: 104863680 blocks (50 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c3t0d0s0          0     No            Okay   Yes


d2: Submirror of d0
    State: Okay        
    Size: 104863680 blocks (50 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c3t1d0s0          0     No            Okay   Yes

I have some replica's on the affected drive

ton# metadb
       flags           first blk       block count
    a m  p  luo        16              8192            /dev/dsk/c3t0d0s3
    a    p  luo        8208            8192            /dev/dsk/c3t0d0s3
    a    p  luo        16400           8192            /dev/dsk/c3t0d0s3
    a    p  luo        16              8192            /dev/dsk/c3t1d0s3
    a    p  luo        8208            8192            /dev/dsk/c3t1d0s3
    a    p  luo        16400           8192            /dev/dsk/c3t1d0s3
    a    p  luo        16              8192            /dev/dsk/c1t0d0s6
    a    p  luo        8208            8192            /dev/dsk/c1t0d0s6
    a    p  luo        16              8192            /dev/dsk/c1t1d0s6
    a    p  luo        8208            8192            /dev/dsk/c1t1d0s6

So I'll remove them first

# metadb -d C3t1d0s3

Then I need to detach the submirror d2 from d0

# metadetach d2 d0

I'll then remove the bad drive from the S1 array which I think I can do 
without
powering down  the S1 array because  they are hot swappable??

I'll then install the new drive and create the disk partitions to match 
the other
drive that's in the S1 array.

Would I then re-create the d2 submirror with

# metainit d2 1 1 c3t1d0s0

Then attach it to d0

metattach d2 d0

Are these steps right or am I missing something?
I'm assuming I can do all of this without unmounting
the volume that  is d0 since it's mirrored and I'm just
removing half the mirror?

Thanks.
Dave Martini
LLNL
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