Dell Server

Lost package when ping iDRAC IP address

• iDRAC may not work properly on 10/100/1000M Auto mode
• Set 100M on switch port manually

racadm

• racadm -r 192.168.0.20 -u root -p xxx get BIOS.SysInformation.SystemServiceTag
• racadm -r 192.168.0.20 -u root -p xxx get BIOS.SysInformation. SystemModelName
• racadm -r 192.168.0.20 -u root -p xxx get System.LCD.CurrentDisplay
• racadm -r 192.168.0.20 -u root -p xxx serveraction powerup
• racadm -r 192.168.0.20 -u root -p xxx serveraction powerdown
• racadm -r 192.168.0.20 -u root -p xxx serveraction powercycle
• racadm -r 192.168.0.20 -u root -p xxx serveraction powerstatus

RAID 1

• RAID 1 consists of an exact copy (or mirror) of a set of data on two or more disks; a classic RAID 1 mirrored pair contains two disks.

RAID 5

• RAID 5 consists of block-level striping with distributed parity. It requires that all drives but one be present to operate.
• Upon failure of a single drive, subsequent reads can be calculated from the distributed parity such that no data is lost.
• RAID 5 requires at least three disks.

RAID 5 + Hotspare

• RAID 5+Spare is a RAID 5 array in which one disk is used as spare to rebuild the system as soon as a disk fails.
• At least four disks are required.