Deadalus and Icarus

These 2 PowerEdge servers are twins, and thus share documentation too.

Details

  • Type: Dell PowerEdge 2950
  • OS: NixOS
  • CPU: 2 x Intel Xeon L5335 @ 2.00GHz
  • RAM: 32GB (Daedalus), 16GB (Icarus)
  • Storage: Dell Perc 6/i Integrated RAID controller
  • Disks: 2 x 73GB SAS disks in RAID 1 (hardware) 3 x 600GB SAS disks in passthrough (3x RAID 0)
  • Drives: Internal SATA DVD+/-RW
  • Network: 2x Onboard Ethernet, 802.3ad bonding
  • iDRAC NIC: Shared on port 1
  • Daedalus' IP is 0.50, Icarus' is 0.150
  • Their iDRAC IPs are 1.50 and 1.150 respectively

Services

  • LDAP
  • NFS, (a.k.a /storage) from Icarus
  • GlusterFS, eventually, or some other distributed storage to replace NFS

Disk Management

MegaCli64 can be used to manage the hardware RAID controller. It is installed on both machines. Take note that there is 1x RAID 1 and 3x RAID 0 set up on both. The RAID 0's are effective passthrough for the 3 600gb sas disks used for ZFS.

# List event log
MegaCli -AdpEventLog -GetEvents -f events.log -a0 && cat events.log

# Check BBU
MegaCli -AdpBbuCmd -a0

# List physical disks, note enclosure IDs (E) + slot IDs (S)
MegaCli64 -PDList -a0 | less

# To create a RAID 0 for passthrough, use this command and replace E + S
MegaCli64 -CfgLdAdd -r0 [E:S] -a0

# To create a RAID 1 array
MegaCli64 -CfgLdAdd -r1 [E:S,E:S] -a0

# Mark a drive ready for replacement#
# If it's in a Raid 0 first delete that, replace N with the LD ID
MegaCli64 -LDInfo -Lall -a0
MegaCli64 -CfgLdDel -LN -a0

MegaCli -PDOffline -PhysDrv [E:S] -a0
MegaCli -PDMarkMissing -PhysDrv [E:S] -a0
MegaCli -PdPrpRmv -PhysDrv [E:S] -a0

# Insert new drive then mark as replacement
# Skip the first 2 steps for RAID 0, and just recreate the array at the end
# Get the array ID from CfgDsply
MegaCli -CfgDsply -a0
# R will be the index of the replacing drive in the array
MegaCli -PdReplaceMissing -PhysDrv [E:S] -ArrayN -rowR -a0
MegaCli -PDRbld -Start -PhysDrv [E:S] -a0
MegaCli -PDMakeGood -PhysDrv[E:S] -a0