RTM-ATCA-SXXX Overview
6806800H62B ATCA‐S201InstallationandUseGuide58
Emerson ATCA-S201
iSCSI
nfs
smb
Shares
LVM2
LVM2 Configuration
MD RAID
Configuration
Ha rdwa re RAID
Configuration
Physical Disks
/dev/sda
/dev/sdb
/dev/sdc
/dev/sdd
/dev/sde
/dev/sdf
/dev/sdg
Maintenance
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+
+
+
‐
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RAID
Physicaldisks
(example:/dev/sda)
Volumegroup
(example:/dev/vga)
Logical disk
(example: /dev/vga/lva0)
55% spare
30% iSCSI
15% nfs 40% iSCSI
20% iSCSI
20% nfs
20% cifs
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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.
5.1.1 JBOD 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.
5.2 Hardware 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.
