In a previous tutorial, we showed you how to create a array with SAS hard drives.
But here, we are going to do it with 3 SSDs. This changes a few things and in particular the acceleration method that can be used with this array of SSDs.
For this tutorial, we used 3 "Samsung SSD 870 EVO" SSDs of 250 GB which are therefore connected via SATA.
When your computer starts up, press the "CTRL + A" keys (on a QWERTY keyboard, since it's in English) or "CTRL + Q" (on an AZERTY keyboard).
Once you have entered the Configuration Tool (ACU) of your Microsemi Adaptec SmartRAID controller, go to : Array Configuration.
Select : Create Array.
Select the SSDs to be used for this array using the arrows of the keyboard, then add them to the list of selected drives by pressing the space bar on your keyboard each time.
Once the desired physical disks have been selected, validate your choice by pressing Enter.
Choose the desired RAID level. In our case, we have selected "RAID 5" which combines performance and data security.
Note that this option is limited depending on the number of physical disks selected in the previous step.
Provide a name for your logical drive. In our case : Virtualization.
For the size of the strips (Strip / Full Stripe Size), it's preferable to leave the default size since it depends on the number of physical disks selected previously and the chosen RAID level.
The "Parity Group Count" option only concerns RAID levels 50 and 60.
In the case of a RAID 50 (for example), if you select "Parity Group Count : 2", your Microsemi Adaptec SmartRAID controller will create a RAID 50 array based on an array of 2 RAID 5 arrays.
For the building method of this logical drive, you will have the choice between :
For the size specified by default, this is the maximum storage size that will be available on this array.
If you leave the default size, this RAID logical drive will take all the space available on your RAID array.
If you want, you can use another unit for the size of the logical drive.
Since this is a array of SSDs and not a array of hard disks, the Configuration Tool (ACU) will display a "SSD OverProvisioning" option.
If you select "Perform SSD OPO" (Perform SSD OverProvisioning Optimization), all used blocks will be reallocated to optimize your SSDs before data is written to the SSD. This will speed up the initialization process.
For the Acceleration Method, since this is a array of SSDs, you will have an additional option called "SSD I/O Bypass".
You can therefore choose between :
Source : Microsemi Smart Storage Controllers - User's Guide - maxView Storage Manager (page 65).
Validate the configuration of your logical drive by pressing Enter.
The "Creating Array" message appears for a few seconds.
Then, the "Array/Logical Drive creation successful ..." message will appear.
Press any key.
If you can't restart your computer to access your Microsemi Adaptec SmartRAID controller configuration tool, here's how to create your SSD array and logical drive from the maxView web interface.
To start, select your controller on the left, then click on the "+" icon located in the "Logical Device" block.
In the "Create Logical Device" window that appears, select "On New Array" and click Next.
Choose the desired RAID level.
In our case, we chose to create a RAID 5 to combine performance and data security (thanks to the fault tolerance of 1 SSD).
Select the SSDs you want to use for this array.
In our case, we will use 3 identical SATA SSDs.
In the "RAID Attributes" step, you can choose :
A summary is displayed with :
Click on Finish.
The "Create logical device operation successful" message appears.
As you can see, maxView tells us that we have a array (Data Array) and a logical drive (Data Logical Device) to store data in.
As expected, the RAID level is "5" and there are indeed 3 physical member disks for it.
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