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10-08-2018 03:08 AM
10-08-2018 03:08 AM
DL360 Gen10: Strip size Hyper-V
Hi,
I need to configure a RAID10 array on a DL360 Gen10, consisting of 4x2,4TB disks. This array will be used as store for WS 2016 Hyper-V vhd & vhdx files. What is the recommended strip size in this scenario? The Controller is a Smart Array P408i-a.
Thanks and regards
Ueli
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10-09-2018 01:43 AM
10-09-2018 01:43 AM
Re: DL360 Gen10: Strip size Hyper-V
Hello Ueli,
When an HPE Smart Array controller makes an array, the unit of data that it manipulates is defined as a “strip” (ranging in size from 64 KiB to 1 MiB). These strips are distributed across the physical drives in the array. A "stripe" is one set of strips. HPE Smart Array controllers configure strips, not stripes. You can calculate the stripe size from:
• Strip size
• Number of physical drives in the logical drive
• RAID level
The best performance and drive longevity is obtained by aligning and sizing the strip and thus stripe size to the application I/O request size and alignment. The smaller (<= 64 KiB) the strip size, the longer the background parity scans and rebuilds take and the more impact to the host I/O during these operations.
Regards
Harsh_B

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