Best performance: Windows 10 software striping vs. storage spaces simple

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Looking to squeeze a bit more speed out of my development PC for test VMs without necessarily switching to hardware RAID. I've got two identical 2TB SATA-3 data drives (OS is on SSD) so I could rebuild as a Windows 10 striped disk (using disk manager) or create a Windows 10 storage pool with a simple space.

Any suggestions for which would give the best performance? I've always understood that Windows software RAID was pretty poor (although probably better than non-striped) but that was compared to hardware RAID. Can't find much which compares software RAID to storage spaces.

munrobasher

Posted 2016-11-01T22:10:25.890

Reputation: 640

And yes, it's all backed up so not overly worried about the inherent risks with RAID-0 – munrobasher – 2016-11-01T22:11:08.673

What inherent risks do you believe exists with RAID 0? You understand that Windows cannot be installed on a Storage Space right? "I've always understood that Windows software RAID was pretty poor" You have miss inderstood, software RAID performance, on Windows is fine, – Ramhound – 2016-11-01T22:22:00.817

3That there is no redundancy from disk failure – munrobasher – 2016-11-01T22:27:45.340

You have quoted me out of context - I said "software RAID was pretty poor compared to hardware RAID". I have since found this post which has the line "Windows software RAID has a bad reputation, performance wise, and even Storage Space seems not too different" http://serverfault.com/questions/685289/software-vs-hardware-raid-performance-and-cache-usage

– munrobasher – 2016-11-01T22:34:22.283

It's not different because it's basically RAID 0/1/01 replacement – Ramhound – 2016-11-01T22:43:12.423

Answers

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Performance of single HDD

  • this is just our base performance of single drive

single

Striped dynamic disk over 3 HDDs

  • this what you call Windows software RAID

3-column simple Storage Space over the same 3 HDDs

  • this is adhoc storage space I made for you with $spaceDisk = New-VirtualDisk -FriendlyName $spaceName -StoragePoolFriendlyName $poolName -NumberOfColumns 3 -NumberOfDataCopies 1 -ResiliencySettingName Simple -ProvisioningType Thin -Size $spaceSize
  • the -NumberOfColumns 3 controls the performance

3column

In both test I used three 3 TB Toshiba HDDs (DT01ACA300). The Storage Spaces have bad reputation when it comes to performance, but that is mainly because of really poor performance of parity Storage Space. Striping looks fine as you see.

Note that this is very bad benchmark, it is obvious that Windows cache kicked in for sequential read as there is no way that the 3 disks would attain 1100 MB/s for read. But you can take this numbers and compare them directly to this album.

Vlastimil Ovčáčík

Posted 2016-11-01T22:10:25.890

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Asked: 2016-11-01T22:10:25.890

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Active: 2017-10-26T17:34:23.910