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741
September 5th, 2013 12:00
Hyper-V and VMware using same RAID group in CX3-10c
We have a CX3-10c with 7 VMware ESX 3.5 U5 hosts. We are considering moving two of our hosts to Hyper-V-based servers. We currently have 8 RAID groups defined on the CX3-10c. All of the RAID groups contain at least a few LUNs formatted with VMFS. Will it cause any problems if we create new LUNs from unused RAID group space formatted for use by Hyper-V? In other words, will having VMFS and NTFS LUNs in the same RAID group cause any problems? Or, does the SAN and hosts not care? As part of this change we are planning to create a new Storage Group and only expose the NTFS LUNs to the Hyper-V hosts.
Thoughts?
Thanks,
Jay
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kelleg
4.5K Posts
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September 6th, 2013 14:00
As the others have already said, using existing raid groups for new LUNs is possible, but you should know what your existing workload is and what the new workload will be. Is the current load random IO, mostly Writes, large block? Is the new workload small block sequential Writes?
You need to know the workloads to determine is the existing raid groups can handle the new workload. See the EMC Best Practices guide for CX3 (I've attached a copy). See the section called "Sizing the Storage System" near the end of the doc.
glen
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EMC CLARiiON Best Practices for Fibre Channel Storage - CLARiiON Release 26.pdf
dynamox
9 Legend
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20.4K Posts
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September 5th, 2013 13:00
storage array does not care, consider your performance requirements. Can the existing LUNs/Raid groups handle additional workload.
Roger_Wu
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4K Posts
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September 5th, 2013 19:00
Block storage can not see what's (file system) on their LUNs. If you have more unbind disks, you can create a new RG/Pool for better performance.
zhouzengchao
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1.4K Posts
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September 8th, 2013 20:00
Of course you can put ESX LUN and Hyper-v LUN on the same RG, but resource contention for sure would happen. If your application can tolerate the performance from the perspective of response time and bandwidth, then put them together is fine.
kelleg
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September 20th, 2013 14:00
Was your question answered correctly? If so, please remember to mark your question Answered when you get the correct answer and award points to the person providing the answer. This helps others searching for a similar issue.
glen