From UGCS

Contents 1 Hardware 2 Disks 3 LVM 4 Network 5 Services 6 Notes

[edit] Hardware

• 4U Dell Poweredge
• Used to be heave in UGCS 3.0
• Located on the left side of the rack, below the KVM
• Quad 700MHZ PIII
• 2GB ram
• 6 Hot-swap SCSI bays
• Linksys GigE ethernet card (added November 2007)

[edit] Disks

• 4 18GB 10K RPM scsi drives in hot-swap bays configured as:
  • /dev/sdN1: 128MB Boot partition
  • /dev/sdN2: 1GB swap partition
  • /dev/sdN3: 17.22GB RAID partiton
• /dev/sd[A-D]3 are in a RAID 4 (md0), with an lvm incorrectly named poseidon (my bad- Joshua)

[edit] LVM

• VG poseidon: 32GB
  • LV root: 5GB, ext3 filesystem mounted on /
  • LV keys: 16MB, xfs filesystem mounted on /srv/keys
  • LV images, 26.5GB, xfs filesystem mounted on /srv

[edit] Network

• IP: 131.215.176.73
• MAC: 00:18:F8:0C:D8:31 (GigE card)
• DNS: hestia.ugcs.caltech.edu
• CNames: none

[edit] Services

• NFS server for login machines
• NFS server for key distribution (primarily for netboot machines)

[edit] Notes

• IMPORTANT: DO NOT HOT-SWAP HARD DRIVES. It appears that adding drives does not work, and then causes the rest of the drives to fail. When you reboot, some of the disks in the raid4 may be out of date- you have to boot with break=mount and force the raid to start. There does not appear to be any data corruption, but this isn't good anyways. Just reboot the machine to add disks