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I now have the first of the high-speed discs (an SSD, or solid-state
device) to swap in. That means teaparty has to go down again, so I can
open up the case. This will likely happen this afternoon, though I
can't yet say exactly when.
Teaparty will be down initially for about 30 minutes while I remove one
of the existing Hard Disc Drives (HDDs) and insert the SSD. I'll then do
some speed testing, probably with teaparty running. If this device is
indeed faster (ie, it's the discs that are the problem, not some other
aspect of the machine on the path to the discs) I will then have to
take teaparty down for a further hour or so, while I shrink the existing
filesystems by about 10% so they'll fit on the new SSD (the HDDs are 2TB,
but annoyingly enterprise-grade SSDs are 1.92TB).
At that point teaparty will come back up, and run slow while the new
SSD syncs up, and at some point next week we'll have to repeat this to
replace the other HDD.
If the SSD is no faster, it means the bottleneck is elsewhere, and the
second hour of downtime won't happen. There will instead be a brief
second outage while I put the old disc back, then teaparty will run slow
for another 24 hours while it resyncs the old second HDD.
Hopefully all this is clear. Call me on my mobile if this is going to be a
disaster for anyone.
- Tom
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