Re: Downgrade from RAID6 to RAID5

Thanks Justin,

Yes this system also goes out of support in 2019.

We have 8 drives but 2 are a mirrored pair in ASP02 used for backups only.

Problem we have is now and any interim solution or improvement that can
get us through to mid 2018 is what we are looking for.

Cheers



Don Brown




From: "Justin Taylor" <JUSTIN@xxxxxxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Date: 25/11/2017 04:35 AM
Subject: Re: Downgrade from RAID6 to RAID5
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



We have an 8202-E4B and it goes out of hardware support in 2019. That's
something to think about before putting too much effort into improving
your existing hardware.


Of course, our system has 8 drives, while yours only has 6. I guess it
could be a different 8202-E4B, which might not be going off support.


HTH



________________________________
From: Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>
Sent: Friday, November 24, 2017 7:25 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Downgrade from RAID6 to RAID5

Don,

1) What feature disk controller are you currently using?

2) Do you have a BP, I'm sure they could locate SSD drives.

3) Did you consider attaching a EXP24S for additional drives?

4) The SSD option will give you 4x the performance, switching from RAID6
to RAID5 will be slight.

5)Also, for future planning - BM announces end of service dates (no more
maintenance) for various Power 6 and Power 7 platforms.

https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=AN&subtype=CA&htmlfid=897/ENUS917-163&appname=USN




Paul