New SSDs are optimized for mixed workloads, such as online transaction processing, database or Web indexing, and email.
Seagate started shipping its
new Pulsar solid-state drives-2.5-inch SSDs the company claims are the fastest
it has ever manufactured-July 18 to its channel partners.
Seagate said that the 400GB
Pulsar XT.2 uses SLC (single-level cell) flash with a native 6Gb/s SAS
(serial-attached SCSI) interface. The XT.2 is optimized for mixed workloads
typical of enterprise environments, such as OLTP (online transaction processing),
database or Web indexing, and email.
A more capacious version,
the 800GB Pulsar.2, is scheduled to become available July 29. Seagate claimed
that this is the first MLC (multi-level cell) flash-enabled SSD made available
by an enterprise hard-drive producer.
In a single storage device
configuration, the XT.2 produced an SPC-1C result of 20,008.82 SPC-1 IOPS
with an average response time of 2.05 milliseconds over a 10-minute duration,
compared with an SPC-1C Sustainability Test result of 20,011.07 IOPS with an
average response time of 2.08 milliseconds over four hours.
SPC (Storage Performance
Council, an independent storage research firm) benchmark
on testing of the Pulsar can be found here.
The Pulsar.2 is aimed
specifically for data centers, unlike typical MLC solid-state drives built for
consumer applications. The Pulsar.2 holds up to 800GB and has built-in
intelligence, in that it is able to automatically detect and correct data
errors that could plague normal drive operations, Seagate said.
The Pulsar.2 SSD supports
both native 6G bps SAS and Serial ATA (SATA) 6G bps interfaces for primary and
secondary server storage.
"Most SSD suppliers
aren't fully aware of the needs of the enterprise," said Jim Handy of
Objective Analysis. "It isn't just a fast interface like SAS, Fibre
Channel or PCIe that they need, and it isn't just IOPS levels in the tens to
hundreds of thousands.
"Without data integrity
and reliability, an SSD is worthless to most enterprise users. Seagate's
undeniable leadership in the enterprise HDD market has given the company a deep
understanding of the necessity of data integrity and endurance."