Configuring The Integrated Hardware Raid Components; Scsi Hardware Raid Components - Acer Altos R910 Series User Manual

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Configuring the integrated hardware
RAID components
Altos R910 system supports either SCSI hardware RAID through the
onboard LSI SCSI controller or SAS hardware RAID through an external
server RAID adapter (LSI 1068 SAS controller).

SCSI hardware RAID components

Altos R910 SCSI model supports RAID 0, 1, 5, and 10 configurations.
Functionality for SCSI hardware RAID is enabled by using the following
components:
• RAID activation key (iButton)
• RAID cache
• RAID BBU
If power to the storage I/O processor drops below specifications,
the RAID BBU maintains the contents of the DIMM by keeping the
DIMM in self-refresh mode until power is restored. After power is
restored, data can be safely written to drives, maintaining the
integrity of the disk array.
Note: It may be possible to configure and enable both onboard
SCSI RAID and SAS RAID. However, only one RAID solution may use
the RAID BBU as a backup power source for configuration data.
RAID activation key
Removing the RAID activation key
1 Observe the ESD precautions and pre-installation instructions
described on page 37.
2 Remove the memory boards or memory air baffles from DIMM
slots C and D. See "Cold Removal of Memory Board" on page 75
and "Removing a memory board air baffle" on page 46.
3 If a PCI card is installed in PCI-X Slot 7, remove the card. For
instructions on removing a PCI card, see page 81.
4 Insert the tip of a small flat-bladed screwdriver under the plastic
tab on the retainer holding the activation key to the mainboard.
3 System upgrade