NAS 352 Online RAID Level Migration and Capacity

NAS 352
Online RAID Level Migration and
Capacity Expansion
Migrate and expand
a storage volume
ASUSTOR COLLEGE
NAS 352: Online RAID Level Migration and Capacity Expansion
COURSE OBJECTIVES
Upon completion of this course you should be able to:
1. Have a general understanding of RAID migration and capacity expansion
2. Be able to migrate and expand a storage volume
PREREQUISITES
Course Prerequisites:
NAS 351: Introduction to RAID
Students are expected to have a working knowledge of:
RAID
OUTLINE
1.
Introduction to RAID Migration
1.1 About RAID migration and capacity expansion
2.
Configuring your NAS
2.1 Migrating to a different RAID level and expanding capacity
3.
Expanding the Capacity of your NAS
3.1 Replacing existing hard disks with larger disks
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NAS 352: Online RAID Level Migration and Capacity Expansion
1. Introduction to RAID Migration
1.1 About RAID migration and capacity expansion
With ASUSTOR NAS it is possible to change the RAID levels of your storage volumes and add hard
disks to volumes to expand storage space. All this is done while the NAS Unit is online. You won’t lose
any of your currently stored data and you can continue to access your files while migration and
expansion is in progress.
However, certain limitations exist with respect to migration and expansion between various
configurations. Please see the following chart for a summary of the migration and expansion
possibilities that are supported by ASUSTOR NAS.
Current
Configuration
No. of Disks to
be Added
Action
New Configuration
New RAID level *
No. of Hard Disks
Current RAID level
of the Volume * No.
of Hard Disks
RAID 5 * 3
1
Add hard disks to existing
volume
RAID 5 * 4
RAID 5 * 3
2
Add hard disks to existing
volume
RAID 5 * 5
RAID 5 * 3
3
Add hard disks to existing
volume
RAID 5 * 6
RAID 5 * 3
4
Add hard disks to existing
volume
RAID 5 * 7
RAID 5 * 3
5
Add hard disks to existing
volume
RAID 5 * 8
RAID 5 * 4
1
Add hard disks to existing
volume
RAID 5 * 5
RAID 5 * 4
2
Add hard disks to existing
volume
RAID 5 * 6
RAID 5 * 4
3
Add hard disks to existing
volume
RAID 5 * 7
RAID 5 * 4
4
Add hard disks to existing
volume
RAID 5 * 8
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NAS 352: Online RAID Level Migration and Capacity Expansion
RAID 5 * 5
1
Add hard disks to existing
volume
RAID 5 * 6
RAID 5 * 5
2
Add hard disks to existing
volume
RAID 5 * 7
RAID 5 * 5
3
Add hard disks to existing
volume
RAID 5 * 8
RAID 5 * 6
1
Add hard disks to existing
volume
RAID 5 * 7
RAID 5 * 6
2
Add hard disks to existing
volume
RAID 5 * 8
RAID 5 * 7
1
Add hard disks to existing
volume
RAID 5 * 8
RAID 6 * 4
1
Add hard disks to existing
volume
RAID 6 * 5
RAID 6 * 4
2
Add hard disks to existing
volume
RAID 6 * 6
RAID 6 * 4
3
Add hard disks to existing
volume
RAID 6 * 7
RAID 6 * 4
4
Add hard disks to existing
volume
RAID 6 * 8
RAID 6 * 5
1
Add hard disks to existing
volume
RAID 6 * 6
RAID 6 * 5
2
Add hard disks to existing
volume
RAID 6 * 7
RAID 6 * 5
3
Add hard disks to existing
volume
RAID 6 * 8
RAID 6 * 6
1
Add hard disks to existing
volume
RAID 6 * 7
RAID 6 * 6
2
Add hard disks to existing
volume
RAID 6 * 8
RAID 6 * 7
1
Add hard disks to existing
volume
RAID 6 * 8
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RAID 10 * 4
2
Add hard disks to existing
volume
RAID 10 * 6
RAID 10 * 4
4
Add hard disks to existing
volume
RAID 10 * 8
RAID 10 * 6
2
Add hard disks to existing
volume
RAID 10 * 8
Single * 1
1
RAID level migration
RAID 1 * 2
Single * 1
2
RAID level migration
RAID 5 * 3
Single * 1
3
RAID level migration
RAID 5 * 4
Single * 1
4
RAID level migration
RAID 5 * 5
Single * 1
5
RAID level migration
RAID 5 * 6
Single * 1
6
RAID level migration
RAID 5 * 7
Single * 1
7
RAID level migration
RAID 5 * 8
Single * 1
3
RAID level migration
RAID 6 * 4
Single * 1
4
RAID level migration
RAID 6 * 5
Single * 1
5
RAID level migration
RAID 6 * 6
Single * 1
6
RAID level migration
RAID 6 * 7
Single * 1
7
RAID level migration
RAID 6 * 8
Single * 1
3
RAID level migration
RAID 10 * 4
Single * 1
5
RAID level migration
RAID 10 * 6
Single * 1
7
RAID level migration
RAID 10 * 8
RAID 1 * 2
1
RAID level migration
RAID 5 * 3
RAID 1 * 2
2
RAID level migration
RAID 5 * 4
RAID 1 * 2
3
RAID level migration
RAID 5 * 5
RAID 1 * 2
4
RAID level migration
RAID 5 * 6
RAID 1 * 2
5
RAID level migration
RAID 5 * 7
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RAID 1 * 2
6
RAID level migration
RAID 5 * 8
RAID 1 * 2
2
RAID level migration
RAID 6 * 4
RAID 1 * 2
3
RAID level migration
RAID 6 * 5
RAID 1 * 2
4
RAID level migration
RAID 6 * 6
RAID 1 * 2
5
RAID level migration
RAID 6 * 7
RAID 1 * 2
6
RAID level migration
RAID 6 * 8
RAID 1 * 2
2
RAID level migration
RAID 10 * 4
RAID 1 * 2
4
RAID level migration
RAID 10 * 6
RAID 1 * 2
6
RAID level migration
RAID 10 * 8
RAID 5 * 3
1
RAID level migration
RAID 6 * 4
RAID 5 * 3
2
RAID level migration
RAID 6 * 5
RAID 5 * 3
3
RAID level migration
RAID 6 * 6
RAID 5 * 3
4
RAID level migration
RAID 6 * 7
RAID 5 * 3
5
RAID level migration
RAID 6 * 8
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NAS 352: Online RAID Level Migration and Capacity Expansion
2. Configuring your NAS
2.1 Migrating to a different RAID level and expanding capacity
In the following example we will walk you through the process of using the Volume Setup Wizard to
add storage capacity to an existing volume and to migrate it to a different RAID level. In our example,
we will be migrating and expanding from a 3 disk RAID 5 configuration to a 4 disk RAID 6
configuration. Please note that in the example we have already inserted a new disk into the ASUSTOR
NAS that is ready to be added to our existing volume.
STEP 1
Open [Storage Manager] and click on [Management] under the [Volume] tab.
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STEP 2
The Volume Setup Wizard window will now appear. Select the [Migrate this volume to a RAID
volume or higher RAID level] radio button and select [RAID 6] from the RAID level drop-down list.
Click [Next] to continue.
STEP 3
Select the corresponding check box for the disk that you would like to add to the existing volume and
click [Next].
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STEP 4
Look over a final summary of the settings for the new volume. Once you’re done, confirm these
settings by clicking [Finish].
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NAS 352: Online RAID Level Migration and Capacity Expansion
STEP 5
You will now be able to see that the volume is in the process of migrating and that the disks are
synchronizing. This means that a portion of the data from the original three hard disks is being
synchronized to the newly added disk. Moreover, because the volume is changing from a RAID 5
configuration to a RAID 6 configuration, the data distribution pattern across the disks will be altered.
During this process, you will still be able to read and write data on the NAS. The total time required to
complete migration will differ depending on the capacity of the hard disks and total amount of data.
Please wait patiently.
STEP 6
This is what the screen should look like once the volume is ready for use.
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NAS 352: Online RAID Level Migration and Capacity Expansion
3. Expanding the Capacity of your NAS
3.1 Replacing existing hard disks with larger disks
In the following example we will walk you through the process of using the Volume Setup Wizard to
expand the storage capacity of an existing volume by replacing its hard disks with higher capacity
ones. We will be demonstrating this process using Volume 1.
Note: This function is only supported on RAID 1, RAID 5, RAID 6 and RAID 10 volumes.
STEP 1
Open [Storage Manager] and click on [Management] under the [Volume] tab.
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STEP 2
The Volume Setup Wizard will now appear. Select the [Replace the existing disks in “Volume 1” with
larger ones] radio button and then click [Next].
STEP 3
Take a look over the procedures for expanding volume capacity and then click [Finish] once you are
done.
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STEP 4
You will now be ready to replace your first disk. The [Status:] field will provide you with instructions to
guide you through the disk replacement process. Eject the drive tray for the first disk and then replace
the old disk with the new higher capacity disk.
STEP 5
This is what the [Status:] field looks like once you eject the disk tray. At this time, you can proceed to
replace the disk in the disk tray with a new disk.
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NAS 352: Online RAID Level Migration and Capacity Expansion
STEP 6
After you have finished replacing the disk, insert the disk tray back into the NAS. The disk will then
begin to synchronize. The time required for synchronization will differ depending on the capacity of
the hard disks and the amount data stored on them. Therefore, synchronization for a single disk may
take a couple of hours to complete. After the disk has finished synchronizing, the [Status:] field will
indicate to you that you may begin to replace the second disk. Follow the same procedures that you
did for the first disk until all the disks in the volume are replaced.
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NAS 352: Online RAID Level Migration and Capacity Expansion
STEP 7
After all the disks in the volume have been replaced, the [Expand Capacity] button will appear. Click on
the [Expand Capacity] button to expand the capacity of the entire volume.
STEP 8
This is what the screen should look like once capacity has finished expanding.
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