Why 24 boxes here and not 23 or $number? Is there load analysis I can use to justify? I don't understand well enough to make the request.

I believe it was semi arbitrary and based on budget. We have 15 nice
machines in the eqiad cluster and 16 good machines and I guestimated that
half again as many would be enough but never ran any hard numbers. 24 may
be too many but it doesn't feel like too too many. If it is too few we can
lower the rescore window for phrases on queries sent to that cluster to
lower the load.

A more conservative approach would be to buy 16 and setup the cluster and
run load tests against it. If we feel we need more machines we can buy them
then.

another consideration is disk utilization, we're roughly at 50% in eqiad ATM (each machine has raid1 2x500GB SSD raid0 2x300GB SSD) and it seems relatively stable over the last 9 months. assuming disk used stays the same 24 machines seem a good initial number, assuming the total disk used stays the same they'll be at ~75% disk space utilization

(procurement is tracked in RT #8524)

s3500 max out at 800 gb, larger than that moves up to the s3700 series

I've requested updated quotes on https://rt.wikimedia.org/Ticket/Display.html?id=8524 and will follow up on them once they come back from Dell.

Since the Dell quote will involve a generation upgrade (so new mainboard and the like), there doesn't seem to be any reason not to get an HP quote for these as well. Once I have an updated Dell quote back for a baseline, I'll request the HP quote.

to clarify, I think it makes sense to quote 800G SSD and also 300G SSD for price comparison

It's my understanding that there is no specific action required for this ticket from the Discovery Department, so I am removing the Discovery-Search (Current work) from this task.

Noting here that we are aware that there is some work required for us to do once the servers are ready, though. :-)

Update:

The quotes for this have been reviewed by myself, @chasemp, & @fgiunchedi and are in final management review/approval.

This order has been submitted, and I'm awaiting shipment updates from the vendor.

In T105707#1537144, @Deskana wrote:

Noting here that we are aware that there is some work required for us to do once the servers are ready, though. :-)

This work is tracked in T109734.

ETA is today.