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Requirements and Recommendations for the Index Server 5.4

This page lists the hardware and software required for the Index Server to operate at its expected performance level. These requirements apply to VM deployments of the Netmail Platform only.

Index Server Minimum Recommendations

The Index Server is responsible for indexing or cataloging all items so that the data can be searched by administrators or email users.

Hardware:

  • Processor: 8 cores (or processors)
  • Memory: 32 GB RAM
  • Network: GB Ethernet
  • Storage: 2 different spaces must be set up for storage
    • Storage #1: 250 GB on local disk for OS, applications, and swap space (come already thin-provisioned with the VM)
    • Storage #2: Adequate attached storage for indexes
      • Fiber Channel (FC) connection to a SAN is recommended
      • iSCSI connections are supported, but performance cannot be guaranteed

Important: Spare disk space must always exist to allow for compaction of indexes. As a rough guide, the minimum spare space = used space / # of slices. Index corruption can occur if spare space is inadequate for index compaction.

 

Additional recommendations:

The following is recommended:

  • Use one index server for every 3-4 Archive Nodes

or

  • UseOne index server for every 20M Emails (32GB RAM), 40M Emails (64-GB RAM), 80M Emails (128GB RAM). This is assuming that each email will generate an average of 2.5 documents on the index server.

 

Virtual Environment:

VMware

  • ESX 3.5 or greater
  • vSphere 5.1 or greater
  • Vmotion supported
  • Thin provisioning supported; thick is suggested
  • VMFS (RDM not required, but suggested for better performance)           
  • Disk Caching on disk array

Hyper-V

  • Hyper-V Server 2008 R2 SP1 and higher (Hyper-V 2012 R2 recommended)
  • Thin provisioning supported; thick is suggested
  • Disk Caching on disk array