I thought I was in high cotton when we got to upgrade past 2.5MB of disk. 😊
http://www.ibmsystem3.nl/stories/Disks.html
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> On Behalf Of Jim Oberholtzer
Sent: Friday, December 14, 2018 11:54 AM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxx>
Subject: RE: P9 with dual EJ14 - Raid5 and Hot Spare questions
Paul:
I get it. My first AS/400 has less than 1.5Tb and we ran the entire enterprise on it. But just like back when I was running that box, we did not have email, blogs, and lists like Midrange-L, we thought 100Mb was quite a bit of storage. Now things have changed.
One change: The cost per Gb of storage has come WAAAYYYY down. You are paying less for that 1.5Tb drive than you did for the 9335, 850Gb on each drive or the 9336/9337 drive enclosures......(minus the drives)
So at 1.5b for the drive we are talking about far less money than "back in the day...."
--
Jim Oberholtzer
Agile Technology Architects
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> On Behalf Of Rob Berendt
Sent: Friday, December 14, 2018 11:42 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: RE: P9 with dual EJ14 - Raid5 and Hot Spare questions
I know Paul, it is rather hard to wrap your head around.
What I get frustrated with are all the people who want IBM to continue to make smaller drives so that it's easier to justify multiple disks. They can't seem to get themselves to justify more than three drives solely on performance. Yes running at only 15% full may be a mind bender for those migrating from 15 year old equipment.
Basically it's this. Bigger disk drives are being made. The market for smaller sizes rapidly shrinks. Disk manufactures would rather retool existing facilities to make the bigger drives than to create an expansive, and expensive, "clean room" environment to make the new drives. So manufacture of smaller drives comes to a screeching halt.
And having more space than their previous system had in it's entireity tied up in "hot spare" alone just fries their mind.
Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail
to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
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From: "Musselman, Paul" <pmusselman@xxxxxxxxxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Date: 12/14/2018 11:05 AM
Subject: RE: P9 with dual EJ14 - Raid5 and Hot Spare questions
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
Jim Oberholtzer wrote (in part):
"... The real question to ask is: One drive is at most 1.5TB. ... So, are two more days of wrangling it around worth the recovery of such a small amount of storage, part of which gets burned up by RAID Striping anyway? I highly doubt it."
Just think about that last statement, "...such a small amount of storage."
When did 1.5 TB become 'small' storage? (;
Paul E Musselman
PaulMmn@xxxxxxxxxxxxx
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