204.2 - Adjusting Storage Device Access

Weight: 2

Description: Candidates should be able to configure kernel options to support various drives. This objective includes software tools to view & modify hard disk settings including iSCSI devices.

Key Knowledge Areas:

Tools and utilities to configure DMA for IDE devices including ATAPI and SATA

Tools and utilities to configure Solid State Drives including AHCI and NVMe

Tools and utilities to manipulate or analyse system resources (e.g. interrupts)

Awareness of sdparm command and its uses

Tools and utilities for iSCSI

Awareness of SAN, including relevant protocols (AoE, FCoE)

Terms and Utilities:

hdparm, sdparm

nvme

tune2fs

fstrim

sysctl

/dev/hd*, /dev/sd*, /dev/nvme*

iscsiadm, scsi_id, iscsid and iscsid.conf

WWID, WWN, LUN numbers