I’m curious how many admins dedicate 3 disks for ONTAP aggr0/vol0 vs having one big aggr0 and vol0 residing on the same aggr as the other data volumes?
Is there a compelling reason to dedicate disks to ONTAP besides “best practice” ?
thanks
Yes, there are some good reasons to have a dedicated root aggr even on older 7-mode systems.
For example, if you ever have to run wafliron on a really large aggr0, you could be down for quite a while.
Doesn't happen that often but it does happen. Better to be safe than sorry IMO.
On smaller configs (like 22x0 or 25x0 with 12 or 24 disks), it's not really feasible to dedicate disks to aggr0. That's about the only exception I'll make on this practice personally. 8.3 w/ ADP helps with this problem quite a bit (lack of efficiency in smaller configs).
-- Brandon Kitchen Datalink 919-606-6766 www.datalink.comhttp://www.datalink.com/ Datalink OneCall Support Phone: 800.291.3230 Follow us on: Twitterhttp://twitter.com/datalinkcorp l Bloghttp://blog.datalink.com/ l Facebookhttp://www.facebook.com/datalinkcorp
On Jun 5, 2015, at 4:44 PM, Fletcher Cocquyt <fcocquyt@stanford.edumailto:fcocquyt@stanford.edu> wrote:
I’m curious how many admins dedicate 3 disks for ONTAP aggr0/vol0 vs having one big aggr0 and vol0 residing on the same aggr as the other data volumes?
Is there a compelling reason to dedicate disks to ONTAP besides “best practice” ?
thanks
_______________________________________________ Toasters mailing list Toasters@teaparty.netmailto:Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
We have dedicated root aggregates for machines that are customer facing, but we will use aggr0 for data on snapvault secondary and archive only machines to regain some space from the large SATA drives.
Cmode you don't really have a choice (unless you're on the newer small boxes that allow you to slice the disks).
--rdp
From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Brandon Kitchen Sent: Friday, June 05, 2015 5:02 PM To: Fletcher Cocquyt Cc: toasters@teaparty.net Lists Subject: Re: Dedicated ONTAP disks?
Yes, there are some good reasons to have a dedicated root aggr even on older 7-mode systems.
For example, if you ever have to run wafliron on a really large aggr0, you could be down for quite a while.
Doesn't happen that often but it does happen. Better to be safe than sorry IMO.
On smaller configs (like 22x0 or 25x0 with 12 or 24 disks), it's not really feasible to dedicate disks to aggr0. That's about the only exception I'll make on this practice personally. 8.3 w/ ADP helps with this problem quite a bit (lack of efficiency in smaller configs).
-- Brandon Kitchen Datalink 919-606-6766 www.datalink.comhttp://www.datalink.com/ Datalink OneCall Support Phone: 800.291.3230 Follow us on: Twitterhttp://twitter.com/datalinkcorp l Bloghttp://blog.datalink.com/ l Facebookhttp://www.facebook.com/datalinkcorp
On Jun 5, 2015, at 4:44 PM, Fletcher Cocquyt <fcocquyt@stanford.edumailto:fcocquyt@stanford.edu> wrote:
I'm curious how many admins dedicate 3 disks for ONTAP aggr0/vol0 vs having one big aggr0 and vol0 residing on the same aggr as the other data volumes?
Is there a compelling reason to dedicate disks to ONTAP besides "best practice" ?
thanks
_______________________________________________ Toasters mailing list Toasters@teaparty.netmailto:Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Hi,
Additionally, having the node root volumes on dedicated aggregates allows you to perform non-disruptive controller upgrades (headswaps) in cDOT using the aggregate relocation feature for the data aggregates.
Aggregate relocation, I assume, won't even be possible if the aggregate contains a node's root volume. I'm not even sure if basic takeover/giveback will work properly as it also makes use of aggregate relocation.
Best regards, Filip
On Fri, Jun 5, 2015 at 11:02 PM, Brandon Kitchen bkitchen@datalink.com wrote:
Yes, there are some good reasons to have a dedicated root aggr even on older 7-mode systems.
For example, if you ever have to run wafliron on a really large aggr0, you could be down for quite a while.
Doesn't happen that often but it does happen. Better to be safe than sorry IMO.
On smaller configs (like 22x0 or 25x0 with 12 or 24 disks), it's not really feasible to dedicate disks to aggr0. That's about the only exception I'll make on this practice personally. 8.3 w/ ADP helps with this problem quite a bit (lack of efficiency in smaller configs).
-- Brandon Kitchen Datalink 919-606-6766 www.datalink.com Datalink OneCall Support Phone: 800.291.3230 Follow us on: Twitter http://twitter.com/datalinkcorp l Blog http://blog.datalink.com/ l Facebook http://www.facebook.com/datalinkcorp
On Jun 5, 2015, at 4:44 PM, Fletcher Cocquyt fcocquyt@stanford.edu wrote:
I’m curious how many admins dedicate 3 disks for ONTAP aggr0/vol0 vs having one big aggr0 and vol0 residing on the same aggr as the other data volumes?
Is there a compelling reason to dedicate disks to ONTAP besides “best practice” ?
thanks
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Le 5 juin 2015 22:44:14 GMT+02:00, Fletcher Cocquyt fcocquyt@stanford.edu a écrit :
I’m curious how many admins dedicate 3 disks for ONTAP aggr0/vol0 vs having one big aggr0 and vol0 residing on the same aggr as the other data volumes?
Is there a compelling reason to dedicate disks to ONTAP besides “best practice” ?
thanks
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Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
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