Storage managers are starting to seriously consider serial-attached SCSI (SAS) drives as a means of building out...
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their storage tiers. Snapshot survey respondents indicate that an average of 10% of the disk drives they currently use in all of their installed storage arrays are SAS drives; 2Gb/sec Fibre Channel (FC) remains the most prevalent disk drive used at 29%, followed by SATA drives at 25%. But 42% of respondents say they're planning to purchase SAS drives in the future, thanks to the widening availability of mixed SAS/SATA storage systems and the ability of SAS drives to offer performance competitive to FC drives at a lower price. Some users remain skeptical, however, noting that SAS drives are still too expensive to warrant serious consideration.