Imation DataGuard T5R User Manual Page 39
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logiCAl drive mAnAgement
To view information about a logical drive and adjust parameters, follow
these steps:
1. From the Storage tab, click the Logical Drive menu item. The list
of logical drives will appear.
2. Move your pointer over the logical drive to display the available options.
• Click View to display information about a logical drive. The table
below explains the meaning of each item in the information panel.
• Click Settings to change or delete the alias in the Alias field. You
can also configure the Read Policy (ReadCache, ReadAhead, or
NoCache) and Write Policy (WriteThru or WriteBack). Click the
Save button to save and apply the settings.
• Click Locate to identify physical drives. This feature will make the status
LEDs blink for one minute on all physical drives used in the disk array.
• Click Delete to remove a logical drive. If you choose this option
it will be necessary to confirm the deletion in a new dialog. Click
Confirm to delete the logical drive or Cancel to keep it.
• The Check Table option is used to display error tables used to
evaluate the integrity of the logical drive and determine if any
corrective action is needed.
Check
Table Item Description
Entry Number
A number assigned to each block of entry.
Table Type
Read Check, Write Check or Inconsistent Block.
Starting Logical
Block Address
Logical block address (LBA) of the first block for this
entry.
Count
Number of errors or continuous blocks starting from
this LBA.
Check Table display options
All
Display all errors.
Read Check
Display Read errors.
Write Check
Display Write errors.
Inconsistent
Block
Display inconsistent blocks for this logical drive. Mirror
data for RAID Levels 1, 1E and 10 or Parity data for RAID
Levels 5 and 6. Identified by the Redundancy Check.
Logical Drive
Information Description
ID
Logical drive identifier: LD0, LD1, etc.
Alias
This is the alias assigned through the Logical Drive
Settings menu.
Disk Array ID
Disk array identifier: DA0, DA1, DA2, etc.
RAID Levels
Lists the RAID level set when the logical drive was
created.
Operational Status
Displays the current state of the logical drive.
Capacity
Displays the data capacity of the logical drive.
Number of Axles
1 axle for most RAID levels; 2 axles for RAID 10.
Physical Capacity
Capacity of the disk array used by the logical drive.
Number of Physical
Drives
The number of physical drives in the disk array.
Stripe Size
Stripe size set when logical drive was created.
Read Policy
Adjustable in the Settings menu. See “Stripe Size”
on page 34.
Sector Size
Sector size set when logical drive was created.
Write Policy
Adjustable in the Settings menu. See “Write Policy”
on page 34.
Tolerable Number of
Failed Drives
Number of physical drives that can fail without the
logical drive going oine.
Synchronized
A new logical drive displays “No” until synchronizing
is completed.
Codec Scheme
n/a
Serial Number
Unique number assigned to this logical drive.
LDType
Displays the LD type of the logical drive (NAS or
iSCSI).
logiCAl drive problemS
Logical drive problems typically result from physical drive failures such
as a critical logical drive. The RAID controller can rebuild a critical
logical drive. A more serious but less common problem is an Incomplete
Disk Array, which results from a physical drive that fails or becomes
missing during RAID level migration or physical drive transport.
!
37
- DATAGUARD APPLIANCES 1
- IMPORTANT SAFETY INSTRUCTIONS 4
- IMATION PRODUCT SUPPORT 4
- SPECIFICATIONS 5
- FRONT PANEL—R4 6
- Feature Description 6
- BACK PANEL—R4 7
- FRONT PANEL—T5R 8
- BACK PANEL—T5R 9
- REMOVE DRIVE CARRIER 10
- PLACE NEW DRIVE IN CARRIER 10
- INSTALLING HARDWARE 10
- POWER ON DATAGUARD APPLIANCE 11
- VISIBLE AND AUDIBLE ALERTS 11
- HARDWARE RESET 11
- USE LCD PANEL CONTROLS 12
- RDX DOCK AND CARTRIDGES—T5R 13
- DASHBOARD TAB 14
- SYSTEM STATUS 15
- FILE SYSTEM OVERVIEW 15
- BACKUP STATUS 16
- DEVICE TAB 17
- SETUP WIZARD 18
- ASiC Setup 19
- AnuAl Setup 20
- Storage > Logical Drive 21
- Storage > File System 22
- FRONT VIEW 23
- BACK VIEW 24
- COMPONENT LIST 25
- (RAID 1, 5, 6) 28
- PHYSICAL DRIVE 29
- Physical Drive 29
- Information Description 29
- Global Physical 30
- Drive Settings Description 30
- Settings Description 31
- EXTERNAL DRIVE 31
- DIAGNOSTIC 32
- STORAGE TAB 33
- STORAGE OVERVIEW 33
- DISK ARRAY 34
- Disk Array 35
- Level Description Performance 37
- LOGICAL DRIVE 38
- Table Item Description 39
- Logical Drive 39
- SPARE DRIVE 40
- FILE SYSTEM 41
- Description 42
- Menu Description 43
- Settings Description 44
- LUN MAP MANAGEMENT 45
- ADMINISTRATION TAB 46
- SUBSYSTEM INFORMATION 46
- Network 47
- DHCP Server 48
- NAS USER 50
- Administration > Service 52
- OPERATION LOG 54
- BACKGROUND ACTIVITY 55
- Activity Setting Description 58
- PERFORMANCE MONITOR 59
- POWER OPTION 59
- MESSAGE ALERT 60
- Alert Item Description 60
- NETWORK SECURITY 61
- CONFIGURATION FILE 62
- IMPORT/EXPORT USERS 63
- RESTORE FACTORY DEFAULT 64
- FIRMWARE UPDATES 64
- SNAPSHOT BACKUP 65
- LOCAL BACKUP 67
- Setting Description 67
- ACkup to uSb 68
- ACkup to eSAtA 69
- NAS > iSCSI Initiator 76
- PROTOCOL CONTROL 77
- FILE SHARING 80
- SCSI INITIATOR 81
- PLUG-INS 81
- APPENDIX 82
- RDX SPANNING 82
- Sing tHe SettingS optionS: 84
- ACTIVE DIRECTORY 85
- SNMP DATA 85
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