DL360 Gen10: Strip size Hyper-V

Haga-huga — Mon, 08 Oct 2018 10:08:00 GMT

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

Re: DL360 Gen10: Strip size Hyper-V

Harsh_b — Tue, 09 Oct 2018 08:43:06 GMT

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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DL360 Gen10: Strip size Hyper-V

Re: DL360 Gen10: Strip size Hyper-V