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A month or so ago, we installed four 1.92TB 2.5 FLASH DRIVE units into our V5000. The quoted annual maintenance cost was about 30% of the drive cost.
-----Original Message-----
From: DrFranken [mailto:midrange@xxxxxxxxxxxx]
Sent: Thursday, July 25, 2019 7:07 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Withdrawal of Spinning Drives
Often this charge was comparable to buying a new drive to replace it on a monthly basis.
That's a little harsh! Even the MMC on the original 70GB SSDs wasn't even close to that. It was high for sure but nobody would even purchase maintenance if you had to repurchase theme every month!
Also to Franz' immediately prior reply at least in the U.S. (I do realize that things are often different by country) that the actual price paid for the drive is generally about 1/2 of the list price. Why do they price it that way? I do not understand but they do.
Another consideration with SAN storage is that you pay software charges per drawer in many cases. So you acquire a drawer that holds 24 drives and you can choose to fill that with SSDs of various sizes or with Spinny drives. The biggest fast spinny was only 900GB so that limited capacity in the drawer to about 12GB as I recall. Go beyond that and you needed not only to purchase an expansion drawer (not so expensive) but software for it AND SWMA for that software! So that 25th drive was Very expensive indeed!! So you reconsider those SSD prices again because they since they can be so very much larger you can put them all in the same drawer. And SSD prices tend to be quite linear with capacity. We've seen a four drawer spinny option fit all into one drawer easily with SSDs and was cheaper to acquire as well as cheaper to maintain. The additional plus is only 2U space and about 1/3 the total power draw (and thus heat
generation) as well.
Bottom line is you can't look only at the price of the drive itself you MUST look at the total package!
- Larry "DrFranken" Bolhuis
www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.
On 7/25/2019 7:11 AM, Rob Berendt wrote:
Important point, but we were talking about the maintenance charges. Spinning disks are often included in the maintenance of the machine. SSD's are charged extra. Often this charge was comparable to buying a new drive to replace it on a monthly basis.
Rob Berendt
midrange.com
