Readit NewsA purely linear graph would absolutely crush their pdf installer and the first 15 years of adobe into a flat line
You’ll never be able to go over 168GB, let them call it the 169.69 plan
I think the Xeon systems should have worked and that it was actually a motherboard bios issue, but I had seen a photo of it running in a threadripper and prayed I wasn’t digging an even deeper hole.
I don’t think the proposed font is correct either, I’m not even sure the concept of font works for that example though. Mainly the arches on the m are wrong, too arch like and whereas the example is more teardrop.
If something particularly bad happened, or you tried being really “clever”, you can get into a rare situation of not being able to import the pool or have it import in read only mode. There are tools to help repair that kind of metadata damage. Then proceed with the normal online repair if needed.
I know RAIDZ1 is ZFS variant of RAID5 and RAIDZ2 is ZFS variant of RAID6; I will use all these terms interchangeably because I'm not too interested in the ZFS special sauce here.
In the early 2000s, a lot of people were pushing RAID5. Having worked in a hosting / colocation data centre for many years I had witnessed many RAID5 failures. What would happen is an array would degrade, and more often than not a secondary drive will fail due to undue load on the array as part of the degraded status. Also a lot of times failure would happen on the rebuild process because a lot of the HW implementations were flakey -- but again also the undue stress on all drives as you rebuild. This is why I would suggest a RAID10 setup at the time because of the double lucky failure, and more importantly because you can trivially use a software implementation which is much more safe. Also a lot of the motherboards at the time were offering RAID but this was really just a binary blob in the kernel doing software RAID with a facade of making it appear like hardware which fooled a lot of people.
Well we've finally done away with hardware / proprietary RAID and we have ZFS, mdadm, etc. I've normally dismissed RAID6/RAIDZ2 because of the parity/rebuild process and concerns of putting undue stress on the drive. But I think maybe this is premature and that I didn't really understand the consequences of a single drive failure versus a double drive failure. So this is kind of what I want to know:
1. When a single drive fails, is there any undue stress on the array, or because the array can pretty much operate unaffected, there's actually no performance degradation until you rebuild the missing drive, and in the case of software it's really just a negligible hit on the CPU if it has to do hashing/erasure coding/etc. I guess the rebuild process is really just the cost of a zfs scrub at this point but at least it is on a healthy array.
2. The good news of RAID6 over RAID10 is you can always survive two drive failure; but I think this is where things are concerning because the rebuild across two drives places a lot of undue stress on the remaining disks, and if any of those disks die then you're shit outta luck. This scenario is much more similar to a single drive failure in a RAID5 failure. But again, I think the rebuild cost is that of a zfs scrub but with the minimal set of disks. So RAIDZ2 would be a much more solid choice over RAID10 right; at least you will always know you can survive a two drive failure?
1. If a drive is missing, and it contained a data block you want to read, then you have to do parity calculations to recalculate that block. this means potentially all drives must use their read capacity for this calculation. I think this would be considered stress and max read throughput is significantly reduced. If your block size is very large, or your files much smaller you might get away with minimal performance hit but you're also wasting a lot of capacity/benefit of z2. (In certain pathological cases z2 can have the storage profile of a double mirror, but with all the complications of z2) The rebuild process will require a recalculation for every missing block type, basically every drive will need to perform a read for each restored block. Writing new data to a degraded z2 pool can force zfs to be quite wasteful. For example, a 5 disk z2 pool with 1 drive missing will mean a maximum of 2 data blocks with 2 parity blocks, instead of the expected 3 and 2. restoring that drive will not automatically restore that capacity unless the files are written again to the restored pool. The drives will be filled unevenly, this has performance and storage efficiency penalties.
2. If you replace both degraded drives at the same time, and you aren't using resilver_defered, it should only need to read all other drives once and write to both new disks. But you might not want this, depending on many complicated factors.
By making the metrics part of a sustaintable company-wide goal. If there's a company-wide goal to increase X kind of revenue by Y% making actionable targets on how a team can contribute (not lazy shit like "our changes should contribute Z% of that Y%"), and within that create for a person another smaller metric based on that.
Also, medical facilities… you certainly could define it as profit, but that bothers me and many other people.
You could define it as patients seen, or “cured” but that incentivizes very quick but probably poor care.
You could define it as intensity of treatment or amount of care given, but you’d probably end up in a situation where 1 incredibly sick person has every doctor treating them.
You could define it as…
1800K white can render colors surprisingly well depending on the phosphor mix. I recently put one with claimed (and measured) CRI over 90 into a flashlight and was surprised to see that it actually can render blues reasonably well.
I'm inclined to think those are better choices for street lights than anything daylight-ish, but I also think we should use far fewer street lights. Their presence often reduces the contrast car headlights provide, making it harder to spot hazards while driving.
I’m not disagreeing with you, I agree that a high cri 1800k would be a nice night light. I just recently deep dived into this last week when my kitchen lights all died last week
https://www-pub.iaea.org/MTCD/Publications/PDF/Pub1660web-81...