|
It is a base system with one core active and 64GB memory and single
partition
They wanted the SSD's for the 'gofaster' as you put it.
Yes the RAID10 will provide best write performance which is what they
wanted
Not huge I/O
Interesting you can not order this config direct from plant, all drives
will arrive configured in RAID10 and I will have to remove the SAS drives
and start the RAID5 set.
Thanks for the feedback
Don Brown
From: "DrFranken" <midrange@xxxxxxxxxxxx>
To: "Midrange Systems Technical Discussion"
<midrange-l@xxxxxxxxxxxx>
Date: 14/09/2018 12:57 AM
Subject: Re: Power 9 disk config
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
I WILL say this is the first time I have every seen this configuration.
We don't see a lot of RAID 10 but it DOES have one advantage in that
there is one write to the RAID 10 set which in turn writes to two
drives. Compare this to IBM i mirroring where IBM i would do a separate
write to each drive of the mirrored pair.
With these two sets as suggested you will have one 'owned' by each of
the SAS controllers in the system so that's good for performance.
I am not seeing any huge red flags here for a small system.
Unknown details of course such as are they turning up all four cores and
expecting to blast a ton of I/O? Or is this a basic system with one
core, perhaps 32GB of memory and they just want SSDs in there to add a
bit of 'gofaster' to the system.
- Larry "DrFranken" Bolhuis
www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.
On 9/12/2018 7:47 PM, Don Brown wrote:
disk
I am configuring a new power 9 for a customer a 9009-41A
This system has a maximum of 10 internal drives.
Requirement is for;
4 x 931GB SSD in RAID10
4 x 283GB SAS in RAID5
I am trying to determine if there is a possibility of a performance issue
between the two raid sets ?
My concern was raised when I got an email from IBM with "You will not get
any performance guarantees!"
Customer is requesting the SSD's in RAID10.
I know there are a number of BP's on this list - any comments on this
config ?--
Thank you
Don Brown
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at https://archive.midrange.com/midrange-l.
Please contact support@xxxxxxxxxxxx for any subscription related
questions.
Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD
______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please visit http://www.symanteccloud.com
______________________________________________________________________
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at https://archive.midrange.com/midrange-l.
Please contact support@xxxxxxxxxxxx for any subscription related
questions.
Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.
midrange.com
