From past experience, we know the CEC is poor for production, P7 slots not hot swappable, only the disks, and gives poor performance, poor is actually being too kind.Why doesn't IBM include a decent disk controller in the CEC, and why did they take a step backwards, Power5 slots were hot swappable.
The CEC 5901 disk controller will make it worse. Back when 1st built this LPAR, it was long and slow.
If I had an extra disk slot, I would include hot spare.
Here are some times IBM sent me a while back.
I'm thinking 6 to 12 hours.
Description Values Values Values
Disk Drive CCIN 58B4 19B3 19A3
IOA CCIN 57B5 57B5 57B3
RAID Type 5 5 5
DPH devices? n n n
# of Drives per IOA 18 24 8
Process Time (hrs)
Initialize load source 1 14 14
Start RAID (no drives config'd) 1 11 11 Add to ASP 1 2 2
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of DrFranken
Sent: Sunday, March 16, 2014 10:52 PM
To: Midrange Systems Technical Discussion
Subject: Re: 8205 Disk Drive errors 19A3FFF9 - Drive type 19A3
Well as a 10K RPM disk it should take 50% longer to fail than a 15K
RPM Disk, right? :-)
Just a suggestion that Hot Spare would be a great idea with these vary large and somewhat slower disks. I'm going to peg rebuild time on a drive that size at 6 Hours or more from the time IBM physically replaces the disk unit.
- Larry "DrFranken" Bolhuis
On 3/16/2014 10:15 PM, Steinmetz, Paul wrote:
One of my disk drives on my software test partition called home.--
Drive type 19A3 571GB 10k RPM, 120+ temp failures , beginning at 6:15 this morning.
Drive is being replaced tomorrow morning, Raid5 protection.
This is our 1st disk failure on our Power7, installed 3/2012 _____
Paul Steinmetz IBM i Systems Administrator
Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071
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