Emerson ATCA-S201 manual Viewing Physical disks, Interpreting physical disk status

RTM-ATCA-SXXX Overview

6.2Viewing Physical disks

Logical volumes are comprised of one or more physical disk members. Using the HTML configuration tool, the user may view the available set of physical disks.

Emerson ATCA-S201  Physical Disks

This top html menu provides a summary list of current physical disks.

Note: The disks appearing in this view will dynamically change to reflect alterations made with MD_RAID configuration menus.

‐ Emerson ATCA-S201

+ iSCSI

+ nfs

+ smb

+ Shares

+ LVM2

+ MD RAID

+ Hardware RAID ‐ PhysicalDisks

/dev/sda 

/dev/sdb

/dev/sdc

+ Maintenance

StorBlade99 ATCA-S201 Physical Disk Summary

Device Name	Parent Device	State	Vendor		Model	Rev
/dev/sda	Unknown	Offline	HITACHI	HUC101414CSS300		A410
/dev/sdb	Unknown	Offline	FUJITSU		MAY2073RC	0103
/dev/sdc	Unknown	Offline	LSILOGIC	Logical Volume		3000
	Update Java Menu to reflect added disks				Re‐Draw Tree

Figure 20 HTML tool, Emerson ATCA-S201 Physical Disk (summary screen)

6.2.1Interpreting physical disk status

Physical disks resources can be mapped to logical volume groups, which are split into Logical device ‘slices’ which are then shared as iSCSI or NAS. The number of Physical disks may not necessarily correlate 1:1 with the hardware disk pool (e.g. number of AMC drive carriers), because physical disks may include volumes created through RAID services that mask the individual hardware disk members. From the ATCA-S201 perspective, physical disks are presented as Linux SCSI devices (/dev/sd[a-z]).

Status	description
Online	Device is actively used as either a iSCSI export or NAS share
	volume
Offline	Device is available for iSCSI or NAS operations.

6806800H62B ATCA‐S201 Installation and Use Guide 68