topic Whether the 10T NL-SAS disk can do raid_dp, I see that 9.9.1P10 seems to support 10THDD to do raid_D in ONTAP Discussions

Whether the 10T NL-SAS disk can do raid_dp, I see that 9.9.1P10 seems to support 10THDD to do raid_D

nice — Wed, 04 Jun 2025 09:59:03 GMT

Whether the 10T NL-SAS disk can do raid_dp, I see that 9.9.1P10 seems to support 10THDD to do raid_DP

Re: Whether the 10T NL-SAS disk can do raid_dp, I see that 9.9.1P10 seems to support 10THDD to do ra

TMACMD — Sun, 10 Jul 2022 01:23:26 GMT

I think this falls into one of my catch phrases:

just because you >can< doesn’t mean you >should<

A 10T drive in some cases can take many hours to a day or more to rebuild. There is extra activity to verify data to be rebuilt. Losing one drive (DP) you can still recover. Losing two during rebuild may cause data loss.

engineering put RAID TEC as the default on large drives for one or more reasons.

Re: Whether the 10T NL-SAS disk can do raid_dp, I see that 9.9.1P10 seems to support 10THDD to do ra

paul_stejskal — Mon, 11 Jul 2022 17:20:59 GMT

Because it takes days (or can in more extreme circumstances) to rebuild a single drive, 3 is better than 2 when you get that large in spinning media capacity.