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2 Posts

02-11-2021

Australia

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Break SSD mirror 3650 M5 to upgrade hardware?

2021-02-11, 3:18 AM

Hi!

Currently I have 2 x 447GB SSD drives in a RAID 1 mirror, plus many SATA data drives similarly configured using the Avago MegaRaid. My SSD array is running out of space as our backup DDB's (dedupe databases) have grown. The OS is elsewhere on other drives. Normally I would migrate the databases to temporary storage and upgrade the storage, but the  disks also have a primary, critical program installed there. I have 2 x 3.8 TB SSDs ready to go, and no spare slots.

Is it feasible to remove one of the 447 GB drives (break the mirror), insert one of the 3.8TB drives, allow rebuild of the RAID 1, then repeat with the other drive? If so that would get the larger drives in place. Am I correct in thinking that I would then be able expand the partition, or put extra partitions on the larger drives?

Many Thanks!

 

Scotty

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721 Posts

08-06-2018

United States of America

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Re:Break SSD mirror 3650 M5 to upgrade hardware?

2021-02-16, 3:56 AM

Hi Scotty

 

If you were to swap in a 3.8 TB drive into a 447GB array you will get a 447GB array with arounf 3.4Tb of space unused. It is permissible to install a bigger drive into an existing array just not a smaller one. When you get done with the swap and the array rebuilds you will still have a 447GB array. You need to refer ServeRAID-M SAS Software User Guide section 4.14.6 Expanding a Virtual Drive to expand a raid 1 array you may be able to expand it after the exchange. Since you already installed OS in the RAID array, you will have the issue of expanding the primary partition (C: drive), you only can expand secondary partition of the array. 

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2 Posts

02-11-2021

Australia

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  • Posts: 2
  • Registered: ‎02-11-2021
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Re:Break SSD mirror 3650 M5 to upgrade hardware?

2021-02-16, 21:46 PM

Thanks Danny,

 

The OS partition is not on these drives. It is on other array drives (non-ssd). Am I correct to assume that I can use the extra space in another SSD partition, and then export data as normal, or expand this smaller partition to a larger size without data loss?

Many Thanks,

 

Scotty

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721 Posts

08-06-2018

United States of America

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Re:Break SSD mirror 3650 M5 to upgrade hardware?

2021-02-18, 3:23 AM

Hi Scotty

 

I have confirmed that you can use another easier method to expand virtual drive capacity. According to the link, user can expand array on the MegaRAID controller by adding more drives. Please find the step details in the KB How to add hard drives to an existing RAID array within a System X server. If possible, we still recommend backup all the data first prior to any hardware or software changes.

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