known deployments

Probabely the largest DRBD installation base is at Global inc.. They are the biggest data center in Japan, and they are using DRBD on about 4000 machines there.

Here is a small list of deployments where I was involved in the setup.

• Mysql & nfs cluster at CUBiT's data center.
  Hardware: 2 Nodes each two 650MHz Pentium III CPUs (therefore SMP), 1GByte RAM,SCSI raid controller, two 100Mbit NICs.
  3 DRBD devices (2x3GB and 1x5GB). Release: 0.5.7
  
• Postgres & Custom Java based applications at CUBiT's data center.
  Haredware: 2 Nodes each one 800Mhz Pentium III CPU, 1GByte RAM, 3ware raid controller, one 4-port 100MBit NIC.
  1 DRBD device (5GB). Release: 0.5.7
  
• Oracle cluster at Salinen Austria.
  Hardware: 2 Nodes each two 800MHz Pentium III CPUs, 1.5GByte RAM, Compaq raid controller, one 1Gbit and two 100MBit NICs.
  4 DRBD devices (3x6GB and 1x4GB). Release: 0.5.8
  

On the mailing list I learned that there are some other interesting clusters using drbd:

• a 175 GB fileserver running on drbd ( 22h full sync time :)
• mailservers
• more Oracle database servers
• a 2 TB system at the University of Utah