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wsturkovich

What is SCSI Simplex and SCSI Duplex?
I have a HP Proliant DL580 G2 server which has 4 SCSI hot swap bays.  The bays can be setup to be Simplex or Duplex.  What is the difference and which one would be betterif I want to have the drives mirrored?

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Avatar of Paul SolovyovskyPaul Solovyovsky🇺🇸

When you duplex the drive cage, you offer the drives (depending on where you install them) the throughput of two SCSI channels vs. one SCSI channel. If you split up the arrays that you install on the server, you can gain throughput access to the disks as you can read and write to the drives over both channels instead of all drives going through one SCSI channel.
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Thanks this really cleared things up.
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Server Hardware

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Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.