kronos

General

• kronos.pharmacology.dal.ca
• 24 cores (48 threads), 256GB RAM, and 15TB
• Ubuntu Server 20.04

Hardware

• Dell R530 Server 1U (Dell 5630)
• ServiceTag: JR55082
• Installed Nov 2015 (ITS ticket: 47541)

Location

• AU10

RAID

• Kronos is set up in a RAID 5 configuration with 5 x (4TB 7.2K RPM SATA 6Gbps 3.5in Hot-plug Hard Drive,13G) drives.

• The RAID is running using a hardware based PERC H330 Integrated RAID Controller.

• This is monitored using the MegaCli66 binary installed in /usr/local/sbin/MegaCli64. Also, a wrapper script called “lsi.sh” makes using MegaCli64 much more user friendly. lsi.sh allows you to get the status of the array as well as start rebuilding the array once you replace a bad drive.

• The script can be ran as (this shows the help):

  sudo lsi.sh

• Information about installing and using these commands were found here: https://calomel.org/megacli_lsi_commands.html

• Detailed information about each command for lsi.sh is available in the actual comments of the script “emacs /usr/local/lsi.sh”

• To get the status of the array:

  sudo lsi.sh status

• To get information about drive health status:

  sudo lsi.sh drives

• To get information about the RAID controller and settings:

  sudo lsi.sh allinfo

• To get drive rebuild progress:

  sudo lsi.sh progress

• If errors are detected an email will be sent to morgan.g.i.langille@gmail.com. Status is checked every 12 hours through a cron job (sudo crontab -e).

• Kronos drive 3 was replaced with a WD Red plus 6Tb 5700 RPM drive on Jan 10th 2023. Failed drive was removed and new drive was put it. We have two additional back-up drives in Morgan's office. We are going to look into setting up a hot spare with one.

• Kronos has a spare drive in slot 1 that acts as a hot swap. This drive is a WD Red plus 6Tb 5700 RPM drive and was installed on Jan 24th 2023. It will automatically rebuild if a drive fails.