rawwellのブックマーク - はてなブックマーク

rawwell id:rawwell

ブックマーク / storagemojo.com (27)

Are SSD-based arrays a bad idea? | StorageMojo
rawwell 2013/05/31
checkitout
リンク
More efficient erasure coding in Windows Azure storage | StorageMojo
rawwell 2013/01/30
checkitout
リンク
The SSD write cliff in real life | StorageMojo
The SSD write cliff in real life by Robin Harris | Thursday, June 7, 2012 | Architecture, SSD/Flash/NVRAM | 9 comments Flash drives are known to have latency issues. The requirement to erase and program large blocks – even for small writes – means that if the drive runs out of free blocks a 50+ ms delay is possible while garbage collection works to provide one. Since free blocks are used up in wri
rawwell 2012/12/07
checkitout
リンク
TransFlash | StorageMojo
rawwell 2012/06/16
checkitout
リンク
FAST ’10 papers: wow. | StorageMojo
rawwell 2010/04/07
"Wow. Power, flash, errors and error handling, advanced file systems, virtualization, there’s something for everyone. It reads like tomorrow’s news. The competition for best paper is intense this year – and that’s a good thing. I’ll be attending the conference and look forward to writing m

checkitout
リンク
Private clouds won’t fly | StorageMojo
rawwell 2010/04/07
"Enterprise clouds such as Cisco’s new UCS promise to enable the glass house to compete with the cloud house. That strategy is necessary but not sufficient: internal clouds won’t have the scale and the capacity to offer internal customers the variable OPEX and the highly elastic capacity. Yet th

checkitout
リンク
Cloud storage for $100 a terabyte | StorageMojo
rawwell 2010/04/07
"This isn’t general purpose or high-performance storage. Nor is it backed by global network of 7 x 24 service professionals. But there are a lot of applications out there that just need a big bit bucket. This is it. No one is manufacturing this for you either – which is a good thing. If you don

checkitout
リンク
Is STEC’s lead sustainable? | StorageMojo
rawwell 2010/04/07
"There might be room for 3 enterprise SSD vendors, but 2 is more likely. The long-term threat to STEC is architectural: as often noted on StorageMojo, flash does best close to the CPU. Check out Fusion-io. Of course the array and storage interconnect vendors should be working hard to reduce storage

checkitout
リンク
Google File System v2, part 2 | StorageMojo
Google File System v2, part 2 by Robin Harris | Tuesday, August 18, 2009 | Architecture, Cloud computing & storage, Clusters, Information Management | 1 comment Bigtable to the rescue (sort of) In Part 1, Sean Quinlan, a Google engineer, related how the original GFS single master architecture became a bottleneck. But since Google controls its entire software stack from OS to apps, it could compens
rawwell 2010/04/07
"Google engineers have been hard at work for the last 2 years building a distributed master system that will work better with Bigtable to fix many of the current problems. Still, it is amazing that in 1 year 4 or 5 people could put together a file system critical to Google’s success for almost 10

checkitout

database

scalability
リンク
TPC-C: comparing SSD & disk | StorageMojo
rawwell 2010/04/07
checkitout

database
リンク
Cisco’s unified computing system | StorageMojo
rawwell 2010/04/07
"# Memory – as in DRAM – a key point. Chambers and Intel remarked on this several times. The next gen Xeon’s will address *lots more* DRAM – hopefully more efficiently than the wretched FB-DIMM – to enable many more VM’s per server. “More memory than any other blade” until other vend

checkitout
リンク
Sun’s adds Lustre to supercomputing | StorageMojo
rawwell 2010/04/07
"CFSI was a tech playpen, not a company. Like Formula 1 racing. Instead of Ferrari, CFSI had the national labs backing them. Great stuff, except nobody else has the problems the national labs have, so it limits the market. Lustre will be facing some serious competition from pNFS once it gets baked i

checkitout
リンク
Btrfs vs ZFS – OMG! | StorageMojo
rawwell 2010/04/07
"Part of what Oracle gets with Sun is ZFS. And part of what Chris Mason of Oracle is working on is Btrfs – B-Tree or “butter” FS – seen as a Linux answer to ZFS. With a GPL license. With many of the same features – such as parent-stored checksums and snapshots – Btrfs provides important

checkitout
リンク
Will a 70 TB cartridge save LTO? | StorageMojo
rawwell 2010/04/07
"Regardless of whether you think tape has a long-term future, this is an impressive demonstration. When I introduced DLT at DEC, customers were thrilled to get to 2.6 GB on a tape cartridge. If they can get the cartridge to market in the next 5 years, they’ll can charge 5x what a disk costs – be

checkitout
リンク
A 1 petabyte science project | StorageMojo
rawwell 2010/04/07
storage
リンク
A petascale parallel database | StorageMojo
rawwell 2010/04/07
"HadoopDB is more science project than commercial tool today. Yet the project demonstrates the feasibility of using scale out compute/storage clusters for work that day typically requires proprietary high-end scale up system architectures. If capital costs are reduced by two thirds with a commodity/

checkitout
リンク
Why we need 4k drives | StorageMojo
rawwell 2010/04/07
"There’s been a lot of heavy lifting behind the scenes to make this a smooth transition. With Vista, W7, Mac OS and Linux support well in hand most users won’t notice any change. Some XP users will get bit by performance issues. The easiest solution for XP users: avoid 4k drives. Factory install

checkitout
リンク
Does RAID 6 stop working in 2019? | StorageMojo
rawwell 2010/04/07
"For enterprise users this conclusion is a Big Deal. While triple parity will solve the protection problem, there are significant trade-offs. 21 drive stripes? Week long rebuilds that mean arrays are always operating in a degraded rebuild mode? Wholesale move to 2.5″ drives to reduce drive and str

checkitout
リンク
Why did Apple drop ZFS? | StorageMojo
rawwell 2010/04/07
"This is speculation of course and no doubt missing many specifics. But what is public – that Apple announced ZFS in June 2008, included a read-only CLI version in Leopard Server and is not shipping it in August 2009 – is evidence enough that things went awry. What other than a license issue wou

checkitout
リンク
Redundant array of inexpensive servers | StorageMojo
rawwell 2010/04/07
"When are enterprise arrays better? Enterprise arrays aren’t designed to compete with Supermicro boxes and FOSS. They offer benefits way beyond commodity-based storage – but at a price. * Performance. Big redundant write caches are perfect for transactional apps – but the corner cases make

checkitout
リンク
1 2 次のページ