Results tagged "RAID"
Total Search Results : 89
SSD, Scale-Out Architecture To Grow
February 29, 2012 01:00 PM
As SSD capacity continues to increase and prices drop, use of SSD for enterprise Tier 1 applications is going to become more and more common. At the same time, enterprises are adopting scale-out architectures. It's an exciting time to be involved in enterprise storage.In Surprise To No One, Oracle buys Pillar
June 30, 2011 07:00 AM
Today, Oracle announced that it is buying SAN array vendor Pillar Data. Pillar has, since its inception, been funded by Oracle CEO Larry Ellison’s Tako Ventures, so the whole transaction comes as a surprise to no one who follows the storage industry.Performance Vs. Capacity: A Fork In The Road
June 20, 2011 07:01 AM
During my recent panel session with Howard Marks and Vanessa Alvarez at Interop, a question came up regarding the "big data" concept: How is it that storage capacity is so important to so many companies when performance has never been so critical? How can these two diverging requirements coexist in the same market, solutions, and devices?Yes, Virginia, RAID Drives Are Different
February 01, 2011 09:30 AM
While some other members of the storage industry's chattering class enjoy the process of haranguing array vendors for their seemingly outrageous disk drive markups, I've started recommending that users seeking cost-effective online storage look at BYOD (bring your own drive) storage systems. There are many choices available, from prosumer Data Robotics offerings and SOHO network-attached storage (NAS) boxes from NetGear and QNAP Systems to disk arrays with enterprise aspirations provided by Promise Technology and Infortrend. However, care must be taken when choosing the drives for a BYOD array.More on Advanced Erasure Codes
January 10, 2011 11:00 AM
As we've previously discussed in "What Comes After RAID? Erasure Codes," forward error correction coding is a leading contender to replace parity RAID as disk hardware evolves past the point where parity provides effective protection. The question remains: Are Reed-Solomon and related coding techniques the inevitable replacement for parity in the RAID systems of the future?What Comes After RAID? Erasure Codes
December 16, 2010 10:43 PM
As I mentioned a few blog entries ago, the basic math behind parity based RAID (Redundant Array of Inexpensive Drives) solutions is starting to break down. While I think it's important for those of us that spend our days thinking about these things to raise the alarm, it's more important to think and write about the technologies that can take us past parity RAID. One major contender is Reed-Solomon erasure codes, which vendors are starting to use as an efficient alternative to parity or mirroring.RAID: I'm Not Dead Yet
December 02, 2010 04:15 PM
The other day a message showed up in my inbox with the subject, "Is RAID Dead?". While I understand, and agree, that expectations and advances in technology have passed simple RAID 5 by, I'm getting tired of the "XYZ Technology is Dead" meme. At various times we've been told tape, the PC, and e-mail were all dead. If calling RAID dead is an overstatement, what is the state of RAID?All Snapshots Are Not Created Equal
September 30, 2010 09:00 AM
Over the past decade or so, snapshots have become a standard feature of disk arrays, volume managers, file systems and even PCI RAID controllers. The pitch from vendors of these products is pretty much the same: "With our technology you can take a snapshot in just a second or so and it will hold only the changed blocks, taking up much less disk space than a full copy." While that statement may typically be true, there are big differences in snapshot implementations.It's Not The Same Old Block Storage
September 24, 2010 09:33 AM
As recently as the turn of the century, block storage was pretty simple. A controller joined a group of disk drives into a RAID set and then offered fixed slices of that RAID set up as logical volume or LUN. All the controller had to do to map a block in the volume to a physical location was calculate offset from the beginning of the RAIDset to the beginning of the volume and the RAID stripe. With features like thin provisioning, automatic tiering and data reduction via deduplication and compression, things aren't that simple.LSI IOPS ROC & Roll
September 20, 2010 09:19 AM
Announced last December, LSI Corporation is now shipping a 6Gb/s SAS RAID-on-Chip (ROC) (redundant array of independent disks) IC (integrated circuit) that more than doubles the RAID 5 random input/output operations per second (IOPS) to tier-one server OEMs. Intended to optimize the use of solid-state drives (SSDs) in servers, the LSI SAS2208 dual-core SAS ROC is also designed for migration to PCI Express 3.0-based servers expected to start shipping in 2012.« Previous Page | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Next Page »
