Lenovo ThinkAgile CP 4000 Series, Upgrade Manual

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Step 7. Check the calculated size of the RAID50 device against the size shown by the following command:
m md daad dm m ----d deettaaiill //d deevv//m md d//m md d5 50 0
Following is an example output:
/dev/md/md50:
Version : 1.2
Creation Time : Thu Aug 16 19:35:39 2018
Raid Level :
raid0
Array Size : 9314494464 (8882.99 GiB
9538.04 GB
)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Fri Aug 17 04:23:27 2018
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Chunk Size : 512K
Consistency Policy : none
Name : any:md50
UUID : d35a4763:b4b9b490:b85614db:6aeb696a
Events : 2986
Number Major Minor RaidDevice State
0
9 125 0 active sync /dev/md/md5
2 9 123 1 active sync /dev/md/md5_2
The calculated size is almost the size displayed in the example output:
9538.04 GB
.
Step 8. Check the RAID level:
m md daad dm m ----d deettaaiill //d deevv//m md d//m md d5 50 0
In the example output from the previous step, the RAID level is 0.
Note: If the RAID level is RAID4, then change the RAID4 level to RAID0:
m md daad dm m ----g grro ow w ----lleevveell 0 0 ----rraaiid d--d deevviicceess= =2 2 //d deevv//m md d//m md d5 50 0
m mddaaddm m:: lleevveell ooff //ddeevv//m mdd//m mdd5500 cchhaannggeedd ttoo rraaiidd00
Attention:
• The new RAID0 array needs to be reshaped a second time. This can take up to several hours to
complete, depending on the size of the array. For example, expanding from 16 TB to 32 TB
takes 11-12 hours.
• Ensure the
Array Size
has increased to the correct amount and that all the RAID5 devices are
included. If not, stop and do not continue! You may need to reshape to RAID4 and then back to
RAID0.
• Each set of eight (8) drives has one (1) parity drive and one (1) spare drive.
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Lenovo ThinkAgile CP Storage Capacity Upgrade Guide