What am I doing wrong?
I ve to start with "I'm no disk expert", so please be patient.
My Dell machine order: - PowerEdge 2850, - 2 x 146GB SCSI Ultra320, - PERC 4 Embedded RAID Option. - C03 MR1, RAID 1 using on-board RAID controller.
(I used the ITU Diskette from Sun for LSI Perc 4e/di drivers)I started the installation of Solaris 10 but I could only see one disk (c0t0d0) during installation. (?)I have two Scsi disks, and the idea is that they are set in RAID 1.
Boot path says: /pci@0,0/pci-ide@1f,1/ide@0/sd@0,0:a
Well, I continued the installation and Solaris 10 was finished and it run well.Now I wanted to test if RAID 1 was correct, "still".
1. I removed disk 1 and restartedThe system answered with: Following SCSI ID's are not responding Channel-0:0 Please Inspect Enclosure Power, SCSI Cabling, and Drive Connections and Reboot Your System.
1 Logical Drive(s) found on the host adapter. 0 Physical Drive(s) found on the host adapter. 1 Logical Drive(a) handled by BIOS 0 Physical Drive(s) handled by BIOS Press to Run Configuration Utility or any other Key to Continue.
2. I put back disk 1 and restartedSolaris 10 run.
3. I removed disk 0 and restartedThe system were angry now and I got response: 1 Logical Drive(s) found on the host adapter. 0 Physical Drive(s) found on the host adapter. 1 Logical Drive(s) Degraded 1 Logical Drive(a) handled by BIOS 0 Physical Drive(s) handled by BIOS Configuration of NVRAM and drives mismatch (Normal mismatch) User Configuration....
Run View/Add Configuration option of Config Utility Press A Key to Run Configuration Utility Or to Continue.
ALT-F10 ... No boot device available - Strike F1 to retry boot, F2 for setup utility
Now it seems that the RAID-1 was not correct, why does Solaris only find one disk ? where is the other one?How can I install Solaris and have the RAID 1 from the HW (controller)?
When entering "Utility mode" I can see both disks.
I cleared the configuration and recreated the raid set, and initialized.So the system is clean again, and I need to re-install Solaris, but please advice on how to get RAID 1 ?
Message Edited by JJJJooohhn on 12-12-2005 05:08 PM
You have a RAID one here in your examples, the bit you are missing is that with any H/W RAID, the controller reports only the VIRTUAL disk to the operating system, so a RAID 5 with 14 drives will be seen as a single drive, and the same with a RAID 1.
I've now re-installed Solaris 10 again and the RAID-1 is working, and now I m careful for not pull both disks at same time :)
I wonder if there is any way to see the disk health without going to the BIOS ?
raidctl does not tell anything. dmesg and var/adm/messages are quiet when I pull a disk!
I mean, it sounds dangerous if Solaris does not report anything.. what happen if one disk fails and Solaris doesnt report.. and after a while the other disk fails too. I will have a system with two broken disks.. no pre-warnings!!