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H730 24 disk RAID 10
Hello,
With a chassis like the R730xd with the 24x 2.5inch drive configuration, is it possible to put all 24 physical disks in a single RAID10 virtual disk?
There are some indications that the limit (with the default RAID10 span setting) is 16 PD's per VD. However there are also some comments that using a span setting of 8 will allow you to create a VD with all 24 PD's.
It isn't entirely clear what exactly an 8 span VD is and the consequences of that. Is that a RAID 0 across 8 RAID1s? Is that a supported / reasonable config to begin with?
Please let me know if I can provide any more information.
Thanks.
Anonymous
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July 7th, 2015 13:00
Dlotterman,
Not quite possible because H730 controller supports up to 16 Disk Groups (PDs) assigned to any given RAID level. Using a span of 8 on 24 PDs, you can create 3X8 RAID 10 VD arrays. As a consequence, you will have data (RAID 0) stripped across these 3 spans (sets of RAID 1) to create RAID 10 arrays.
This is certainly supported and reasonable configuration to test and begin with.
dlotterman
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July 7th, 2015 16:00
Hi Robert,
Thanks for your response. So just to clarify, the end result of this is:
3x RAID10 VD's of 8 disks presented to the host OS
Or
1x RAID10 VD of 24 disks presented to the host OS
Thanks again
Anonymous
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July 8th, 2015 08:00
Yes, you will have 3 Virtual Disks (VDs) of RAID 10 with 8 disks each. However, you can not create a single VD with all 24 disks. The reason being that the H730 controller can support a maximum 16 disks in a single VD.
Let me know if you have any further questions.