Dell PowerEdge 1655MC Server Module Board Replacement (Restoring - Page 6

www.dell.com | support.dell.com Verifying the Mirror on a Server Module Running Red Hat Linux 7.3 1 Log in as root. 2 Type cat/proc/scsi/scsi. • If the command returns the phrase Module: VIRTUAL DISK in the output, you have a synchronized mirror. For example: Attached devices: Host: scsi0 Channel: 00 Module: VIRTUAL DISK Type: Direct-Access Id: 00 Lun: 00 Rev: 1000 ANSI SCSI revision: 02 • If the command returns information about two hard drives, proceed to step 3. For example: Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: FUJITSU Model: MAN3735MP Rev: 5507 Type: Direct-Access ANSI SCSI revision: 03 Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: FUJITSU Model: MAN3367MP Rev: 5507 Type: Direct-Access ANSI SCSI revision: 03 3 To verify that the two hard drives were both mirrored, look at the partition structure on both hard drives. NOTICE: After the partitions are displayed, do not press , which allows you to delete the mirrors. a To access hard drive 0, type fdisk -l /dev/sda. b To access hard drive 1, type fdisk -1 /dev/sdb. c Compare the output of both commands. If the partition numbers and sizes on both /dev/sda and /dev/sdb are identical, the hard drives were part of a RAID 1 mirror. 4 Type df -h to display the partitions that are currently mounted by the operating system. • If all of the partitions are mounted from /dev/sda and no partitions are mounted from /dev/sdb, /dev/sdb is the secondary drive in the mirror. • If all of the partitions are mounted from /dev/sdb and no partitions are mounted from /dev/sda, /dev/sda is the secondary drive in the mirror. 1-4 Ser ver Module Board Replacement