RTM-ATCA-SXXX Overview

5.3Software 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 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).

5.3.1Software 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 improved performance and redundancy.

Emerson ATCA-S201

 

+ iSCSI

+ nfs

+ smb

+ Shares

+ LVM2

MD RAID

Configuration

+ Hardware RAID

+ Physical Disks

+ Maintenance

StorBlade99 ATCA-S201 Create MD RAID Volume

Available

Parent

Bus

Target

Lun

Vendor

Product

 

Rev

Size

Select

Disk

 

 

 

 

 

 

 

 

 

 

 

 

/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 md0

ˇ

Submit

Override warnings

Import Foreign array

 

Clear ownership

 

 

 

 

 

Figure 19 Emerson ATCA-S201 MD RAID (new installation screen-shot)

Parameter

Available Disk

Parent

Bus/Target/Lun

Vendor/Product/Rev

Select

Add to volume

RAID0

RAID1

RAID4

RAID5

RAID6

Description

An enumeration of disks that may be used in new RAID LUN definition.

Identifies the volume that claims ownership to a disk. ‘Unknown’ indicates disk has no known volume ownership.

Identifies the SCSI parameters used to address the virtual RAID device Use these items to identify the physical disk resource.

‘Radio button’ identifies which disks will participate in the new RAID LUN definition.

‘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. Click to create a new RAID0 LUN (stripping)

Click to create a new RAID1 LUN (mirroring) Click to create a new RAID4 LUN (Fixed parity) Click to create a new RAID5 LUN (Rotating parity) Click to create a new RAID6 LUN (double parity)

6806800H62B ATCA‐S201 Installation and Use Guide

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Emerson ATCA-S201 manual Software RAID configuration, Software RAID web-configuration menu usage, Parameter