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ThinkServer RAID 720i CacheCade Pro 2.0 Volume Size 2017-11-13, 10:02 AM Enduser has RD650 with RAID 720ix w/4GB cache, 3.960GB SSDs and claims they can only configure max 512GB CacheCade volume.
This article applies to all LSI MegaRAID cards that support JBOD. Was tested on OVH’s FS-72T servers with LSI MegaRAID SAS 9271-8i with firmware 23.34.0-0019.
For all commands to work you need megacli installed. For OVH servers you just need to boot the machine in rescue-pro64 more.
1. Flash the latest LSI MegaRAID firmware or ask your provider to do it for you. You can get information about your LSI card by running:
2. Reboot into rescue mode and check if the JBOD feature is available and enabled:
If JBOD is not enable you should enable it:
If JBOD is not available for your card, your only option is to create multiple RAID0 arrays – one per physical drive. Leave a comment if you need help in doing so.
3. Force-clear the entire array. You need to -Force it because you want to remove the SSD from CacheCade and expose it to the OS:
Important: this will basically destory/clear all settings, including previously set RAID arrays etc. Don’t run this if you care about data already stored on your drives!
4. List your drives.
Usually OVH uses enclosure 8 / slots 0-11 for HDDs and enclosure 252 / slot 4 for the SSD.
5. Set the disks as “Good”:
Nirvana the chosen rejects rare. 6. Create the JBOD.
You should use PhysDriv[enclosure:slot,enclosure:slot], from step #4, specifying all drives.
7. The end result should be similar with this:
8. Reboot and install your desired OS via IPMI. After finishing the install don’t reboot.
Notes:
– installing the OS via OVH’s automated install system will remove all above settings as their tools don’t support JBOD;
– on CentOS7 you can access the CLI by pressing ctrl+alt+f3, after installation is done.
– installing the OS via OVH’s automated install system will remove all above settings as their tools don’t support JBOD;
– on CentOS7 you can access the CLI by pressing ctrl+alt+f3, after installation is done.
9. Use smartctl to identify the serial number of the drive you are installing the OS onto.
Where sdX is the drive you’ve currently installed the OS onto.
If smartctl doesn’t works you could try lsblk:
Note down the serial number, or use Sprunge to paste text online.
10. Reboot into rescue mode and identify the exact drive you’ve used when installing:
You are looking for the last variable from “Inquiry Data”. Example:
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In this example the serial number is “A9072QG8RABC”.
11. Cross check the serial number you noted down from smartctl and compare it with current results. After identifying the drive you should note down the “Enclosure” and “Slot Number” of that drive. Example:
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12. Check what drive is declared as bootable in the array:
You should get something like:
In the example above the bootable drive is on Enclosure 8, Slot 2. Cross-check with the information you’ve got at #11.
In case the Enclosure and Slot are not the correct ones, set the new correct drive as bootable:
Example:
13. Reboot & Enjoy.
Was this tutorial useful? Buy me a drink by using the “donate” button below. 🙂
Main Page > Server Hardware > RAID Controllers > LSI
With CacheCade, LSI is offering a quick SSD read/write cache for RAID volumes. The functional approach is similar to Adaptec's maxCache technology. Detailed information about the configuration of a CacheCade volume can be found once more in the Configuring the LSI MegaRAID CacheCade.
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Functional Approach
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Functional approach to CacheCade (source: [1]
- One or more SSDs will be connected to the RAID controller in addition to the normal hard disks, when using CacheCade.
- Thereby, the conventional hard disks operate completely normally in the RAID array (such as, four hard disks in a RAID 5 array).
- Data that is often read from the RAID array is automatically stored on the SSDs ('working data set').
- Data areas that are often read can therefore be read directly from the SSD, which improves read performance.
- The CacheCade content will remain on the SSDs even during a re-boot.
Versions
CacheCade 1.1
Initial version of CacheCade
CacheCade Pro 2.0
This is the current version of CacheCade. It also uses the SSDs for writing operations and offers improved read cache performance[1][2]
RAID Controllers and CacheCade
- All 926x, 927x and 928x Controller are supporting CacheCade.
- Currently SW and HW license keys can be used to enable CacheCade. But in the near future HW keys will be the only option enable CacheCade. Information about the usage of SW keys can be found in
- CacheCade and LSI CacheVault Flash Cache can be combined.
- Only SSDs approved by LSI should be used together with CacheCade. You can find a list of them here:
References
Lsi Cachecade Keygen Generator Free
- ↑ 1.01.1LSI CacheCade Product Brief (for CacheCade 1.1)
- ↑CacheCade Pro 2.0 FAQ
Additional Information
Lsi Cachecade Keygen Generator 2017
- MegaRAID CacheCade Software (lsi.com)
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