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More tidbits from SNW





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Replication tips from JPMorgan-Chase session on DR

JPMorgan-Chase vice president and senior architect Dmitri Ryutov (who pointed out his initials are DR) said one of his business units recently decided on asynchronous replication with guaranteed write order as a compromise between the performance hit associated with synchronous replication, the cost associated with multi-hop and the potential for error with asynchronously replicating highly active databases. However, Young, who is using EMC Corp.’s SRDF-A between two sites 160 miles apart, warned that at the secondary DR site regular point-in-time copies are necessary, because a lost WAN link will destroy the write order—something other users in the session said they were glad they learned.

Another user in Ryutov’s session said an under-addressed issue when it comes to wide-area disaster recovery is compliance with international regulations. The user cited Chinese restrictions on Web content, which a traditional open WAN link for replication may violate, and said he hasn’t yet found a tool that adequately addresses this issue.

Finally, another attendee at the session pointed out that users frequently forget to factor in telco costs in a disaster recovery plans. JPMorgan-Chase’s replication plan, a seven-figure deal for hardware and software according to Ryutov, probably also includes as much as $50,000 a month in telco costs for the four 1 Gbps WAN links between the financial giant’s two sites, the attendee estimated.

UK email archiver zips into US market

British email archiving company C2C, which was working the press briefing circuit at this year’s show in the hopes of drumming up interest in the US market, incorporates an interesting data-reduction feature into its archiving software—the software zips and unzips every attachment in the archive automatically as it stores messages, and can also be used to zip attachments in existing archives.

Data integrity initiative

Oracle, Emulex, LSI Logic and Seagate were briefing journalists in their hotel suite about the new Data Integrity Initiative, which will see each of the vendors add the T-10 Data Integrity Field (DIF) standard—a checksum algorithm that adds 8 bits to each block of data—into their silicon. The companies will be demonstrating and promoting an end-to-end DIF package consisting of each of their products, but say there are no plans as yet for a bundled product offering. Each said that T-10 DIF will become a permanent part of their product lines. Products are expected next year.

The big picture

An emerging trend in the storage industry—if this year’s show is any indication–is a growing shift from current, technology-only discussions to matters of global and long-term impact. The discussion on energy efficiency that began Monday carried into Tuesday’s keynotes, in a talk given by IBM VP of system storage Barry Rudolph. “Energy savings has gone from a recommendation to a mandate,” he said.

Cora Carmody, Chief Information Officer for Science Applications International Corporation (SAIC) also gave a speech that tied the Book of Revelation together with the future of technology. Carmody predicted that “personally addressable humans” would be connected to “presence awareness” systems—an example is a kitchen that starts cooking dinner when your car is a certain distance from home. Most interestingly, though Carmody dismissed the concept as superstition, she acknowledged that bionics—computerizing the human body—are believed by some to be the “Mark of the Beast,” a permanent bodily device required to do business in a global economy brought about by the Antichrist and a precursor to the apocalypse detailed in the Biblical Book of Revelation.

A little bit off the beaten path, maybe, but more evidence that the storage industry is starting to look outward and forward.

Another SNW trend: 51 percent of respondents in the main ballroom Tuesday morning voted in a poll that server and storage virtualization was the fastest-growing priority in their IT shop; implementing an information-based management strategy came in second at 28 percent, and service-oriented architectures scored third with 20 percent.

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I totally agree with Anil. Storage Performance can greatly reduce or increase VM performance. Using local disks can greatly enhance performance.
Try VMex from http://www.vm6software.com
This product takes local disks and creates a v-SAN and you can acheive more than 300 MBs I/O and your VMs will perform.
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