DC Chain DS2120 with SCSI Enclosure

[Leon Shen]

Hi Experts,

I am not sure anyone did this before. rp3410 server connect with DS2120. DS2120 connect with another SCSI Disk Enclosure. I have few questions to ask.

1. Does DC Chain physcial connection work? Can rp3410 detect out?

2. If I want see the DS2120 external Disk, I need do

#ioscan -funC disk
#pvcreate -f /dev/rdsk/cxtxdx(assume cxtxdx is external disk)
# mkdir vg01
#mknod /dev/vg01/group c 64 0x010000
#lvcreate -L 1400 -n lvol1 /dev/vg01 (assume want create 140GB File system)
#newfs -F vxfs /dev/vg01/lvol1
#cd /
#mkdir data
#mount /dev/vg01/lvol1 /data

edit entry in /etc/fstab

Please correct me if my command wrong

regards
Leon

[Thayanidhi · Accepted solution]

Hi,

Daisy chian is OK, bit make sure the SCSI ID are set unique. In DS2100 there is switch to set if ID's. Refer to coresponding document prior to chain it to another SCSI systems. Also make sure all the devices in the bus set same SCSI params. (E.g wide, ultra, lvd..etc). Is it connected to standard SCSI adapter or Internal RAID controller(like 4Si).

If it's standard SCSI, then the your procedure ok with few modifications.

vgcreate is missing, lvcreate -L

If it's 4Si RAID, then run irm to create LUNs before you can use them.

TT

[Leon Shen]

HI Thayanidhi,

Thanks for the help. The environment i want copy all the data from scsi data enclosure to DS2120. When I create the file systyem for DS2120, I will create vg02. since vg01 already use for scsi data enclosure. After I do the data copy, how I remove the vg01 from the rp3410 ? do I just do vgreduce and pvremove?

best regards
Leon

[Thayanidhi]

After copying the data, umount the original file systems and mount the new file systems in same name (modify /etc/fstab).

vgchnage -a n
vgexport

is enough.

Regds
TT