Emerson ATCA-S201 Manuale Utente
RTM-ATCA-SXXX Overview
6806800H62B
ATCA‐S201 Installation and Use Guide
63
5.3 Software RAID configuration
Administrators may use the ‘MD RAID’ menus to configure the Software AID
features of
ATCA-S201
. The implementation leverages the mdadm tool available
with the 2.6.23 Linux kernel, which also offers the ability to conduct all volume setup
and configuration via a shell commands. Upon creation, a new software raid-device
and configuration via a shell commands. Upon creation, a new software raid-device
will appear as a new device in web or cli configuration menus. Users may utilize the
new raid-device to create logical volumes, and configure iSCSI and NAS file shares.
The ‘MD RAID’ configuration tool appears within the html tool’s main navigation
panel on the left side as shown in the figure below.
NOTE: Software RAID should be applied before defining volume groups using the
logical volume manager (LVM).
logical volume manager (LVM).
5.3.1 Software RAID web-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
managed in the same manner as other physical disks, but boast benefits including
improved performance and redundancy.
Emerson ATCA-S201
iSCSI
nfs
smb
Sha res
LVM2
MD RAID
nfs
smb
Sha res
LVM2
MD RAID
Configura tion
Ha rdware RAID
Physica l Disks
Maintena nce
Physica l Disks
Maintena nce
+
‐
+
+
+
‐
+
+
+
+
StorBlade99 ATCA-S201 Create MD RAID Volume
Available
Disk
Parent
Bus
Target
Lun
Vendor
Product
Rev
Size
Select
/dev/sda
Unknown
0
1
0
HITACHI
HUC101414CSS300
A410
140205MB
/dev/sdb
Unknown
0
2
0
HITACHI
HUC101414CSS300
A410
140205MB
/dev/sdc
Unknown
0
0
0
HITACHI
HUC101414CSS300
A410
140205MB
Add to Volume
RAID 0
RAID1 RAID 4 RAID 5
RAID 6 Override warnings
Import Foreign array Clear ownership
Submit
md0
ˇ
Figure 19 Emerson ATCA-S201 MD RAID (new installation screen-shot)
Parameter
Description
Available Disk
An enumeration of disks that may be used in new RAID LUN definition.
Parent
Identifies the volume that claims ownership to a disk. ‘Unknown’ indicates disk has no
known volume ownership.
known volume ownership.
Bus/Target/Lun
Identifies the SCSI parameters used to address the virtual RAID device
Vendor/Product/Rev
Use these items to identify the physical disk resource.
Select
‘Radio button’ identifies which disks will participate in the new RAID LUN definition.
Add to volume
‘Radio button’ adds the selected disk(s) to an existing volume as spare disk(s).
If a volume is degraded, the volume will immediately commence a re-build operation.
If a volume is degraded, the volume will immediately commence a re-build operation.
RAID0
Click to create a new RAID0 LUN (stripping)
RAID1
Click to create a new RAID1 LUN (mirroring)
RAID4
Click to create a new RAID4 LUN (Fixed parity)
RAID5
Click to create a new RAID5 LUN (Rotating parity)
RAID6
Click to create a new RAID6 LUN (double parity)