HPE Smart Array P408i-a SR Gen10 - RAID6 (ADG)

[IFYSARNEN]

Guten Tag

Server: ProLiant ML350 Gen10
Product ID: 877623-421
Storage Controller: HPE Smart Array P408i-a SR Gen10

Disk: SAS 600GB
Model: EH000600JWHPN
Geschwindigkeit: 15k
Anzahl: 8
Fehlertoleranz: RAID 6 (ADG)

Ich verwende einen HP ProLiant ML350 Gen10 mit einem Smart Array Controller P408i-a Storage Controller. Ich habe 8 Stk. Disk in einem RAID (ADG) Verbund.

Ich habe schon mehrmals von Berufskollegen mitbekommen, dass ein RAID 6(ADG) nicht optimal mit 8 Disk arbeitet. Ideal wären fünf Disk oder neun Disk. Der Controller könne so optimaler arbeiten.
Hat jemand schon Erfahrungen damit gemacht oder weiss jemand etwas davon ?

Ich freue mich auf einen Antwort und danke euch für eurte mühungen.

Gruss

Chris

Google Translate

Good day

Server: ProLiant ML350 Gen10
Product ID: 877623-421
Storage Controller: HPE Smart Array P408i-a SR Gen10

Disk: SAS 600GB
Model: EH000600JWHPN
Speed: 15k
Number: 8
Fault Tolerance: RAID 6 (ADG)

I'm using an HP ProLiant ML350 Gen10 with a Smart Array Controller P408i-a storage controller. I have 8 pcs of disk in a RAID (ADG) composite.

I've heard from colleagues a number of times that a RAID 6 (ADG) does not work optimally with 8 disk. Ideal would be five disk or nine disk. The controller could thus work optimally.
Has anyone had any experience with it or does anyone know about it?

I look forward to an answer and thank you for your efforts.

Greeting
Chris

[R_Raj]

Hello, 

In Raid 6, increasing the number of drives will increase the Read speed. But the write speed will not have much difference.

So for example, if we have 8 drives with 1TB each in RAID 6

Usable Capacity 6 TB

Speed 6x read speed, no write speed gain

And if we use 6 Drives with 1TB each in RAID 6 

Usable Capacity 4 TB

Speed  4x read speed, no write speed gain

I hope the above example explained above answers your question.

Regards

Raj