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Managing Disks in a C-series Controller

The SRC CLI provides commands to let you monitor disk status, replace faulty disks, and reinitialize disks in the system.

Replacing or Swapping a Disk

You can replace a failed disk or swap a working disk in a C-series Controller. Note the following limitations:

To replace or swap a disk:

  1. Disable the disk.

    Note: Do not power down the C-series Controller when you are swapping a disk, because doing so might result in initialization errors.

  2. Remove the disk from the system.
  3. Insert a new disk.
  4. Enable the disk.
  5. Initialize the new disk.

    The command generates data on the disk that enables the disk controller to manage the disk. The disk controller copies data from the other disk and establishes mirroring between the two disks.

  6. Verify that the disk is initialized.
    C:ID:L  Device Type     Blocks    Bytes/Block Usage            Shared Rate
    
    ------  --------------  --------- ----------- ---------------- ------ ----
    
    0:00:0   Disk            145226112 512         Initialized      NO     150 
    
    0:01:0   Disk            145226112 512         Initialized      NO     150 
      
    
            Smart    Method of         Enable 
    
            Capable  Informational     Exception  Performance  Error  
    
    C:ID:L  Device   Exceptions(MRIE)  Control    Enabled      Count  
    
    ------  -------  ----------------  ---------  -----------  ------
    
    0:00:0     Y            6             Y           N             0
    
    0:01:0     Y            6             Y           N             0
     
    
    Controller Tasks
    
    TaskId Function  Done%  Container State Specific1 Specific2
    
    ------ -------- ------- --------- ----- --------- ---------
    100     Rebuild  0.3%    0         RUN   00000000  00000000
    
    

Reinitializing an Active Disk

You can reinitialize a disk that is already active in a C-series Controller.

To reinitialize a disk:

Viewing Information About Disks on a C-series Platform

To view information about disks in the C-series Controller:

user@host> show disk status
C:ID:L  Device Type     Blocks    Bytes/Block Usage            Shared Rate

------  --------------  --------- ----------- ---------------- ------ ----

0:00:0   Disk            145226112 512         Initialized      NO     150 

0:01:0   Disk            145226112 512         Initialized      NO     150 
  

        Smart    Method of         Enable 

        Capable  Informational     Exception  Performance  Error  

C:ID:L  Device   Exceptions(MRIE)  Control    Enabled      Count  

------  -------  ----------------  ---------  -----------  ------

0:00:0     Y            6             Y           N             0

0:01:0     Y            6             Y           N             0
 

Controller Tasks

TaskId Function  Done%  Container State Specific1 Specific2

------ -------- ------- --------- ----- --------- ---------
No tasks currently running on the controller

Table 8: show disk status Output Fields

Field Name

Field Description

C:ID:L

C indicates the channel number, ID the device ID, and L the device logical number

Device Type

Type of device; disk

Blocks

Number of blocks available on the disk

Bytes/Block

Number of bytes for each block

Usage

Status of disk:

  • Detached—Not available for use
  • Initialized—Prepared for use with arrays
  • Not initialized—Not prepared for use with arrays
  • Offline—Present at system boot, but the disk was removed or failed
  • Unowned—The controller does not control the disk

Shared

Whether or not the disk is on a shared channel

Rate

Disk speed in megabytes per second

Smart Capable Device

Whether or not the device is enabled for Specifies if Self-Monitoring, Analysis and Reporting Technology (SMART)

Methods of Informational Exceptions (MIE)

List of MIE exceptions

Enable Exception Control

Whether or not SMART exception reporting is enabled

Performance Enabled

Whether or not performance is enabled

Error Count

Number of errors that SMART found on the disk

Controller Tasks

The No tasks currently running on controller message indicates that no tasks are running, including initialization.


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