Hardware

Our current (Jan 26, 2004) configuration follows. The load it is currently supporting can be derived from our graphs server.

• 5 frontends
  • 3 Sun Ultra 80s
    • 2x450mhz UltraSparc II processors.
    • 2 GB memory.
    • Internal 10000 RPM disk.
    • 4 GB swap.
  • 2 SunFire 280Rs
    • 2x1015mhz UltraSparc III processors.
    • 4 GB memory.
    • Internal 10000 RPM disk.
    • 11 GB swap.
• 5 production backends
  • 4 Sun 220R
    • 1x450mhz UltraSparc II processor
    • 2 GB memory.
    • 4 GB swap (2 GB on 10000 RPM system disk, 2 GB on 10000 internal disk)
    • main storage off of a Sun Dual UltraSCSI PCI card
    • main storage is one JetStor II-LVD SCSI RAID arrays. Configuration of each unit is 8x36 GB 15000 RPM disks partitioned into two 100GB RAID5 partitions. Each partition is on its own SCSI channel.
  • 1 Sun 280R
    • 2x1015mhz UltraSparc III processors.
    • 4 GB memory.
    • 2 Internal 10000 RPM disks
    • 18 GB swap (9GB on each internal disk)
    • main storage off of a Sun Dual Channel Ultra3 SCSI PCI card
    • main storage is one JetStor III U160 SCSI RAID array. Configuration of each unit is 8x73 GB 15000 RPM disks partitioned into two 160GB RAID5 partitions. Each partition is on its own SCSI channel.
• 1 mupdate master, a Dell 2450:
• Pentium III 733 MHz
• 1 GB memory
• internal RAID-5 disk
• 3 ANDREW.CMU.EDU MX, Dell 2650:
  • Pentium 4 3Ghz
  • 2 GB memory
  • Hardware RAID mirror (2x73GB 15,000rpm disks)
• 3 SMTP.ANDREW.CMU.EDU MX, Dell 2650:
  • Pentium 4 3Ghz
  • 2 GB memory
  • Hardware RAID mirror (2x73GB 15,000rpm disks)
• 2 CMU.EDU MX, Dell 2650:
  • Pentium 4 3Ghz
  • 2 GB memory
  • Hardware RAID mirror (2x73GB 15,000rpm disks)
• 1 mailing list server, Dell 2650:
  • Pentium 4 2.8Ghz
  • 1 GB memory
  • Hardware RAID mirror (2x73GB 15,000rpm disks)
• 3 webmail servers, Dell Optiplex GX 260 small form factor:
  • Pentium 4 2.4Ghz
  • 1 GB memory
  • internal 80 GB ATA disk

Software

All Suns are running Solaris 2.8.
All Dells are running Linux 2.4.

Mailing list server is running Majordomo. SMTP/MX servers are running Sendmail.

Pre-Murder Server Hardware

This information applies to our configuration just before we went to the Cyrus Murder. This configuration, running early versions of Cyrus 2.1, was just barely supporting 6200 concurrent connections.

• Sun Ultra 80 - 4x450mhz UltraSparc II processors. Solaris 2.8
• 4GB memory
• Swap configuration - swap on system disk plus dedicated swap on one 10,000rpm 9GB disk and one 7200rpm 2GB disk.
• Three Sun Dual UltraSCSI PCI cards in addition to the two SCSI channels on the Ultra 80.
• Three JetStor II-LVD SCSI RAID arrays. Configuration of each unit is 8x18GB 10,000rpm disks partitioned into two 50GB RAID5 partitions. Each partition is on its own SCSI channel.
  • Four RAID5 partitions are dedicated for user mail spool space.
  • One RAID set has allocated 15GB /imap (our imap configdirectory). The rest given to user spool space. This is represented as multiple LUNs so iostat gives us good data.
  • One RAID set is allocated 10GB /var/spool/mqueue. The rest is allocated for netnews exported via IMAP.

Usage Statistics

As of Jan 31, 2003:

• mailboxes (*): 203069
• user mailboxes (user.*): 173414
• user INBOXes (user.%): 26516

You may also find some other interesting information by starting from the top level of our graphs server: http://graphs.andrew.cmu.edu