In 2004, the "islands" group will shrink to 28%, with several other models showing growth as alternatives. But director-class switches appear to be the most popular upgrade path for SANs among our respondents.
But SAN architectures will also be changing in other ways in 2004, according to respondents. While not universal, interest in IP storage is real and will likely be translated into some implementations next year. For example, 31% said they would deploy IP storage switches and 14% of respondents listed iSCSI as the primary protocol they would be deploying next year.
Some of the interest in the Internet Protocol (IP) is undoubtedly linked to wide-area DR plans: 35% of respondents said they would buy Fibre Channel (FC)-to-IP bridges or gateways. But interest in IP on campus is also real: 29% of respondents plan to purchase SCSI-to-iSCSI converters. In both cases, the preponderance of storage managers had modest plans, indicating they would buy fewer than five devices.
Meeting the compliance, DR challenges
If raw capacity growth is no longer the order of the day, neither is the simple scaling of SANs. The related pressures of more reliable business continuity architectures and greater data retention requirements from government are clearly rising to the top of the agenda at many shops.
The response to new compliance requirements is mixed. (See Figure 6) While only a small fraction of respondents had no plan, nearly a quarter didn't know what their plan was. The remaining two-thirds of respondents were fairly evenly split in their approach. More than a quarter said they had a comprehensive plan to meet most needs, but nearly as many cited either a phased rollout or an ad hoc approach by application.
As to how companies are meeting the challenge, 45% cited increased spending on backup or archive systems to comply with data retention requirements. Only 1% cited a decrease in spending on such systems, one of the lowest "decrease" ratings in the survey. Yet 16% cited no purchase plans--either they've already bought the stuff (unlikely) or they are among the 12% who have no plans for compliance.
The main platform storage managers picked for compliance was tape archiving (58%), with conventional disk backup/archive taking second place at 30%. Least favored was disk-based write once, read many (WORM) technology (À la EMC Centera) at 9%. (See Figure 7)
Prior surveys had revealed a distinct flavor of "getting the house in order" when it comes to data protection. A heavy reliance on tape and a desire to back up more users and applications suggested that overwhelmed storage departments were taking the first, obvious steps of making what they have work better before embarking on new technology projects.
This survey continued along those lines, but filled out the picture of how storage managers are tackling this daunting collection of challenges. Large tape libraries continue to be the preferred platform. More than half of respondents will buy at least one tape library in 2004. And 38% of those purchases will have more than 100 slots in their libraries.
As for the format war, it continues. The combination of DLT/SDLT has as big a share with respondents as LTO did. On the other hand, LTO clearly outpaced SDLT, which has now been on the market long enough to establish itself. While there were clear niches for formats like 9840 and AIT, none were anywhere close to the popularity of the two linear tape formats.
When it comes to DR specifically, 61% of respondents are increasing their spending on products or services in the coming year. Off-site tape storage has been passed by remote copy/replication as the frontrunner for primary purchase, 43% to 40%. (See Figure 8) Both will see more spending: 46% said they would increase spending on off-site storage of backup tapes and 47% said they would boost spending on remote mirroring.
While the survey clearly shows that tape is not dead, it does suggest that it may be catching a cold. For the first time, disk-based backup showed up as the primary alternative for those who were decreasing their use of tape, with 69% of that group citing disk as their primary strategy.
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Users will focus on software to integrate |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |



|
 |
 |
 |
 |
 |
 |
 |
Getting it all under management
Caught in the vise between efficiency and expansion, many storage managers are receptive to the idea that storage management software can help them automate and grow at the same time, with some measure of control. Half of survey respondents plan to increase spending on storage management software, with only 2% decreasing spending. (See Figure 9)
Their motive is clear and hasn't changed in a year: manage more storage with the same staff, according to 43% of respondents. Second motive: simplify management of different storage environments, say 22% of respondents.
That desire was also reflected in respondents' answer to the question, "Which best describes your primary purchase for storage management software in 2004?" Top choice (46%) went to multivendor management. (See Figure 10) March's survey had shown a preference for element managers, but the tide seems to have returned to last year's view of storage management software as being primarily a middleware layer within the storage domain. Neither the lower level element manager role, nor the grand integration into higher-level suites such as Hewlett-Packard OpenView or Computer Associates Unicenter was favored.
Which new technologies will make the cut?
Next year may not be a big year for implementing new technologies, but some specific ones are getting serious attention from storage managers. We gave our survey takers a list of the products and technologies we hear the most from vendors about, and asked them to indicate their plans to implement or evaluate each one. (See Figure 11)
It's not surprising that with the energy going into consolidation, SAN/NAS gateways lead the list of new technologies that are being or will be implemented. Quota management seems to be the part of storage resource management (SRM) and SAN management that has found the quickest favor with storage managers as a way of controlling storage growth. Respondents seemed otherwise uninterested in chargeback and definitely sour on autoprovisioning, two other buzzy options being pushed by vendors.
As for base technologies, serial ATA and iSCSI may not be definites in many shops yet, but they will certainly get a look-see, say respondents. The same can't be said for virtual SANs and content-addressed storage, two interesting, but proprietary technologies (Cisco Systems Inc. and EMC Corp., respectively).
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
How vendor choices are changing |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Respondents were asked to name their primary vendors in a variety of product categories, an indication of the mindshare that each vendor has with storage managers. The leaders in each category are shown here. Many of the major players are losing mindshare, both to each other and to smaller, newer companies with too little presence to be listed here.

|
 |
 |
 |
 |
 |
 |
 |
About this survey:
This survey was conducted in August 2003 by e-mail. Results are based on surveys completed by 500 qualified respondents, all of whom had specific purchasing involvement in at least two of the following areas: disk, switches, backup software, backup hardware and storage management software. The average storage budget for respondents was approximately $2 million.