Reg software mirroring for internal hard drives

[zxcv]

Hi ,

We have 6 internal hard drives with our rx6600 hpux 11iv2 alongwith 2 OS disks.

I want to create raid 5 on this drives.

How do we do it ?

root #/ >ioscan -fnC disk|grep EH
disk         2  0/4/1/0.0.0.1.0          sdisk          CLAIMED     DEVICE       HP      EH0146FARWD
disk         3  0/4/1/0.0.0.2.0          sdisk          CLAIMED     DEVICE       HP      EH0146FARWD
disk         4  0/4/1/0.0.0.3.0          sdisk          CLAIMED     DEVICE       HP      EH0146FARWD
disk         5  0/4/1/0.0.0.4.0          sdisk          CLAIMED     DEVICE       HP      EH0146FARWD
disk         6  0/4/1/0.0.0.5.0          sdisk          CLAIMED     DEVICE       HP      EH0146FARWD
disk         9  0/4/1/0.0.0.7.0          sdisk          CLAIMED     DEVICE       HP      EH0146FARUB

[Ajin_1]

Hi

Harware Raid or Software Raid ?

Hardware Raid -Whar Raid Controller you are using?

Software Raid --Do you have Mirrored Ux Installed?

[Patrick Wallek]

The Mirror Disk software will not allow you to do RAID5.  MirrorDisk only allows mirroring or RAID 1.

Since you have an rx6600 your best bet is going to be hardware RAID with a RAID controller.

[RAJD1]

Hi,

The rx-6600 usually comes with inbuilt RAID controller, sometime the RAID configuration resides there with preinstalled with factory built. If the H/W RAID is not removed you can see less disk in OS , (ioscan -fnC disk) output.  If the H/W RAID is not configured you can see all the available disks in the OS.

Use this command to check if your system has hardware RAID:

# sasmgr get_info -D /dev/sasd0 -q RAID 

-if it is not there you can do it, using sasmgr ,

-or from EFI drvcfg command utility ,

- With software mirroring (MirrorDisk/UX ) you can  get RAID 0 or  RAID 1 . 

HTH,

Raj D.

[zxcv]

Hi , root #/ > sasmgr get_info -D /dev/sasd0 -q raid ERROR: Unable to obtain SAS Address for the specified HW Path: No such device Wed May 2 12:37:34 2012 ---------- PHYSICAL DRIVES ---------- LUN dsf SAS Address Enclosure Bay Size(MB) /dev/rdsk/c21t0d0 0x5000c5000c0ad719 1 1 140014 /dev/rdsk/c21t1d0 0x5000c5000c0afcf9 1 2 140014 /dev/rdsk/c21t2d0 0x5000c5000c0afd1d 1 3 140014 /dev/rdsk/c21t3d0 0x5000c5000c0afcfd 1 4 140014 /dev/rdsk/c21t4d0 0x5000cca00b74ff51 1 5 140014 /dev/rdsk/c21t5d0 0x5000c5000c0afe89 1 6 140014 ---------- LOGICAL DRIVE 7 ---------- Raid Level : RAID 1 Volume sas address : 0xa91990a29aea7f0 Device Special File : /dev/rdsk/c21t6d0 Raid State : OPTIMAL Raid Status Flag : ENABLED Raid Size : 139898 Rebuild Rate : 0.00 % Rebuild Progress : 100.00 % Participating Physical Drive(s) : SAS Address Enc Bay Size(MB) Type State 0x5000c5000c0ad48d 1 7 140014 PRIMARY ONLINE 0x5000c5000c0afb81 1 8 140014 SECONDARY ONLINE

[zxcv]

oops the o/p was messy ,

root #/ >  sasmgr get_info -D /dev/sasd0 -q raid
ERROR: Unable to obtain SAS Address for the specified HW Path: No such device

Wed May  2 12:37:34 2012

---------- PHYSICAL DRIVES ----------
LUN dsf              SAS Address          Enclosure    Bay      Size(MB)

/dev/rdsk/c21t0d0    0x5000c5000c0ad719     1            1      140014
/dev/rdsk/c21t1d0    0x5000c5000c0afcf9     1            2      140014
/dev/rdsk/c21t2d0    0x5000c5000c0afd1d     1            3      140014
/dev/rdsk/c21t3d0    0x5000c5000c0afcfd     1            4      140014
/dev/rdsk/c21t4d0    0x5000cca00b74ff51     1            5      140014
/dev/rdsk/c21t5d0    0x5000c5000c0afe89     1            6      140014

---------- LOGICAL DRIVE 7 ----------

Raid Level                                         : RAID 1
Volume sas address                                 : 0xa91990a29aea7f0
Device Special File                                : /dev/rdsk/c21t6d0
Raid State                                         : OPTIMAL
Raid Status Flag                                   : ENABLED
Raid Size                                          : 139898
Rebuild Rate                                       : 0.00 %
Rebuild Progress                                   : 100.00 %

Participating Physical Drive(s) :

SAS Address         Enc   Bay   Size(MB)      Type            State

0x5000c5000c0ad48d   1     7    140014        PRIMARY         ONLINE
0x5000c5000c0afb81   1     8    140014        SECONDARY       ONLINE

[Torsten.]

You have the default SAS controller installed. This controller can manage 2 pairs of mirrored disks, you already have 2 mirrored disks. This controller cannot do RAID5.

Consider to backup all your data, install an optional smartarray P400, create logical drives (1 RAID1 for OS, RAID5 for data for example) and restore your data.