Kevin OBrien

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About Kevin OBrien

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    StorageReview Editor
  • Birthday 08/11/83

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    Somewhere, USA
  • Interests
    Motorcycling, camping, geocaching, breaking electronics

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  1. Crap, didn't see that. Thanks for pointing that out! Point still stands on the 2TB model.
  2. On SSD, before taking a jump in that direction, please research some of the corner-case support issues some have encountered with it: I've personally heard fantastic things about Storage Spaces Direct in regards to performance, but I think there are support issues that still need to be honed out. You just don't encounter the same scale of problems with other solutions out of the gate. On the all-flash side, I've been incredibly impressed with the NetApp AFF-series. I'm playing around with the A200 right now and its been awesome. Performance hit from inline compression and dedupe isn't that bad either.
  3. Both of those drives are going to be roughly in the same ballpark for noise. What platform will you be using and where will it be located? Rubber isolation to help with seek noise and just distance away from you will help the most.
  4. Fun benchmark... not bad. Performance wise though I've attached the Kingston. Incredibly terrible at low block size, and you can see the dips during the large block transfer sections.
  5. We used the stock driver. In every single case in the past where a custom driver is different, it had zero impact on mixed workloads. There might have been a small uptick in straight line numbers but that was it.
  6. Out of the gate the RAID card vs HBA (or the Intel chipset that we test with in our consumer platform) will chop away quite a bit of performance. Sometimes 2-3x. The 12Gb/s LSI based cards do have an HBA mode that can offer much higher performance than what you are seeing through that older RAID card. Even better is a straight up LSI 9300-8i HBA and sticking with software RAID in the OS.
  7. That RAID card you are using will never be as fast as a dedicated HBA or an Intel chipset connecting the SSDs to a SATA bus. So much of that bursty speed you see in a review would be lopped off by the 9260-based RAID card. What long term workloads will you be running on those SSDs? Since you did see our review I'm curious what pushed you in the direction of this particular model to purchase. It didn't response well at all in any of our server workload profiles.
  8. What SSDs specifically are you working with? That RAID card looks like an older 9200-series LSI model, which if you are using just hard drives or slower SSDs you may not see a difference.
  9. Either Samsung offering would be a solid bet. I'd run away from that Transcend drive. The WD offering should be stable and reliable, but not as fast as the 850 EVO. So my order would be 1. 850 EVO 2. WD Green 3. 750 EVO
  10. But this isn't a civic pulling a yacht test. Those synthetic benchmarks are used across all drives, workload doesn't change there. This would be like comparing two cheap economy cars and realizing that one not only gets good gas mileage, but handles really well still. This is the same type of spread you see on NVMe or SAS products. Many drives offer the same or similar level of performance to a degree, but the thing that differentiates each model is the DWPD.
  11. In the StorageReview Enterprise Lab we use a variety of power management tools and battery backups. If a data center is not generating their own power or has sufficient backup generators, an interruption in power supply is inevitable (in the cases above, interruptions are still a possibility). For our testing environments we use Eaton gear from 5PX UPS for managing a subset of systems up to the BladeUPS and its ability to power several racks. The 5PX UPS has been running in our lab for over 5 years and the time has finally come to perform some scheduled maintenance on it and the connected EBM (Extended Battery Module). In this In the Lab we go over the steps required to swap out the batteries in the UPS and replace the EBM. In The Lab: Eaton 5PX & EBM Battery Replacement
  12. Have you reached out to VMware or Adaptec on the issue to see if they can replicate?
  13. There is an element of performance as viewed through the lens of a synthetic loadgen tool versus the real world. This is the write speed chart in VMware seen as I'm moving two large VMs onto a datastore sitting on the 1.92TB Max.
  14. Performance over the lifespan of the drive isn't a great metric to go by. If its too slow to accomplish certain tasks at the onset, knowing it will stay that slow day after day doesn't really help you out that much. We did get the 1.92TB Max in today, which we will be comparing in the same tests.
  15. On original lithium battery Arlo: My parents ended up getting some cameras this past winter. SE WI, really, really cold. They had a few weeks where the temp was hovering close to 0F. Installed before Christmas, one camera is at 46% and the other is at 88%. The one at 46% had a bit of a snafu one day where it was triggered into live view mode and not turned off for an hour or so. Ended up draining the battery fast, but leveled off afterwards. That was like 2 months ago. So far I'm at 98% on one Pro and 88% on the other Pro. Both were charged to 100% and installed a week or so ago. The light usage camera captures a few events a day (driveway) while the backyard one captures many long videos. Since we let our dog out or play in the backyard it probably gets 10-20 45 second videos a day easy. Those are also peak quality.