Subject: General Tech | January 26, 2015 - 01:15 PM | Jeremy Hellstrom
Tagged: statistics, mtbf, hdd, backblaze
Backblaze is a moderately sized hosting company with about 40,000 disks set up in their own style of arrays called Storage Pods, which are open sourced so that you can build one yourself if you so desire. Every once and a while they put out reliability numbers for the HDDs that they use in their arrays; the newest report just arrived for your perusal. This is good as most reliability and market share studies are done by professional organizations which they tend to charge quite a bit for their findings as they do put a lot of effort into ensuring that their data is correct. Unfortunately that also means that most people do not have access to the information and make judgments based on incomplete or incorrect data. As The Register points out, 40,000 HDDs is a very small sample size compared to the market as a whole or even large hosting companies and so the data set you can see here may not be the best representation of the actual market failure rates projected from it may not be overly accurate. On the other hand it is nice to have any data, especially when you are provided with the actual sample size and a definition of failure. If you are really into the numbers game, spend some time researching the Mean Time Between Failure and Average Failure Rate and the ongoing debate on how to properly measure expected mortality rates among large drives.
"We're not entirely comfortable with cloud backup outfit Backblaze's data on disk drive reliability, but the company has just popped out another year's worth of analysis on which drives hang around longest. With due scepticism, let's have a look."
Here is some more Tech News from around the web:
- Hands-on With Windows 10’s Preview Build 9926 @ Techgage
- SURPRISE! Microsoft pops open Windows 10 Preview build early @ The Register
- We Can’t Wait to Try Leatherman’s New Wearable @ MAKE:Blog
- Apple's iPhone 7 chip will reportedly be supplied by Samsung Electronics @ The Inquirer
- Tenda AV1000 Gigabit Powerline Adapter @ eTeknix
Subject: General Tech | January 26, 2015 - 03:42 PM | Jeremy Hellstrom
Tagged: swiftech, MCP655 PWM, VisionTek, CryoVenom R9 290 LE, phanteks, Enthoo Luxe
Pictured below is a VisionTek R9 290 using a watercooler custome designed by EK Water Blocks for a limited edition of CryoVenom R9 290 LE and gives this build some serious GPU power. As this system build is being done by Silent PC Review a generic pump is not going to cut the mustard and instead they chose the Swiftech MCP655 PWM for its low noise while operating. To cool off the i7-4790K a VisionTek/EK Supremacy waterblock was chosen as IK produces very high quality parts. To house the build a Phanteks Enthoo Luxe was chosen for it space and the ease of installing a radiator as well as its clean overall design. Check out the full build over at SPCR.
"Our seventh article in this season's new quiet gaming PC build guide series is our first complete discrete liquid cooled system, featuring the VisionTek CryoVenom R9 290 Limited Edition Graphics Card. This 450W beast of a system gets tamed to a cool, soft purr."
Here are some more Systems articles from around the web:
- Journey to a Silent MicroATX @ Silent PC Review
- ECS LIVA-X Mini PC (Intel N2808) @ techPowerUp
- Quiet mini-ITX Gaming Build Guide #3: BitFenix Prodigy Edition @ Silent PC Review
- Gigabyte BRIX S BXi5H-5200 @ Kitguru
Subject: Storage | January 26, 2015 - 05:27 PM | Jeremy Hellstrom
Tagged: Samsung, firmware, EVO, 840 evo
In the fall it was confirmed by Samsung that stale data on some 840 EVO drives would suffer performance degradation and released a tool to mitigate the issue which Al reviewed here. The Tech Report recently heard of some cases of drives slowing even with the new EXT0CB6Q firmware installed and decided to investigate. They took a 840 EVO 250GB SSD which had been filled with files to test the patch and was then left forgotten on a shelf for several months and tested the speeds. The benchmarks showed an average speed between 35-54MB/s far below what you would expect to see from an SSD but in line with what users have been reported. On the other hand another 840 EVO which has been in constant use since the firmware update shows no signs whatsoever of slowing down, though NTFS compression was recently used on the drive which could have refreshed the flash. Obviously more testing needs to be done, keep your eyes out for updates on this new development.
"In October, Samsung patched its 840 EVO SSD to address a problem that caused slow read speeds with old data. Recent reports suggest the issue isn't completely fixed, and the results of our own testing agree."
Here are some more Storage reviews from around the web:
- Plextor M6e Black Edition SSD @ The SSD Review
- OCZ Challenge update: All 5 ARC 100 SSD’s hit 200TB mark @ Kitgru
- Samsung's Portable SSD T1 @ The Tech Report
- Samsung Portable SSD T1 500GB @ Custom PC Review
- Samsung T1 SSD @ HardwareHeaven
- Samsung Portable SSD T1 @ The SSD Review
- Kingston SDCA3 microSDHC/SDXC UHS-I U3 Card @ The SSD Review
- Synology DiskStation DS215j 2-Bay NAS @ eTeknix
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