Emerson ATCA-S201 manual Jbod mode, Hardware RAID configuration Menu usage

						RTM-ATCA-SXXX Overview
				55% spare	15% nfs	40% iSCSI	20% nfs
							20% cifs
		Emerson ATCA-S201
‐				Logical disk
	+		iSCSI
	+
			nfs	(example: /dev/vga/lva0)	30% iSCSI	20% iSCSI
	+		smb
	+		Shares
			LVM2	Volume group
	‐
			 LVM2 Configuration	(example: /dev/vga)
	‐		MD RAID
			 Configuration
	‐		Hardware RAID
			 Configuration	RAID
	‐		Physical Disks

/dev/sda

 /dev/sdb
 /dev/sdc	Physical disks
 /dev/sde
 /dev/sdd
 /dev/sdf	(example: /dev/sda)

/dev/sdg

+ Maintenance

Figure 15 HTML tool, Main navigation side-bar, Hardware RAID->Configuration

These menus are used to view and arrange the hardware disk pool. The hardware disk pool is the raw (unformatted/unassigned) disk capacity or resources available to a ATCA-S201. In SNIA terminology, these are primordial disks. This storage is block I/O comprised of the following:

1.AMC SAS/SATA hard drive(s)

2.RTM SAS/SATA hard drive(s)

3.Disks or volumes accessed via an AMC SAS controller

4.Disks or volumes access via an AMC FC controller

The sum capacity of the hardware disk pool resources equals the total size of storage available to the particular ATCA-S201.

5.1.1JBOD mode

Just a bunch of disks (JBOD) is a term to describe disks which are not part of a RAID or logical device definition. By default, a new ATCA-S201 will scan and display all discovered disks 1:1 in the physical disk menu. These disks may be used as-is, or grouped using the configuration tools to create RAID or combined logical volumes.

Note: If the installation will use JBOD, and not use RAID, the user may proceed to the next chapter.

5.2Hardware RAID configuration Menu usage

On a new system installation, this configuration menu enables the creation of RAID disk(s) that will appear in the physical disk menu. Once created, RAID disks are managed in the same manner as other physical disks, but boast benefits including improved performance and redundancy.

6806800H62B ATCA‐S201 Installation and Use Guide 58