ISS Technology Update Volume 7, Number 10

Operating environment for HP SSDs

HP server disk drives are available in three levels based on performance: Entry, Midline, and Enterprise. The HP solid state

drives introduced in September 2008 represent a level of performance, reliability, and capacity roughly equivalent to Midline

server disk drives. More importantly, however, HP server SSDs can deliver this level of reliability in operating environments that

are unsuitable for traditional disk drives (Table 1-1).

Table 1-1. SSD operating envelope

HP server SSD

Operating Temperature 0°-70° C

Operating Shock 1500 g (.5 ms half sine wave)

Vibration 20 g (peak)10 – 2000 Hz

Power Consumption (Active) Under 2 watts

HP SSD Futures

The HP server SSDs introduced in late 2008 represent the first generation of SSDs for ProLiant servers. In the first half of 2009,

HP expects to introduce hot-plug SSDs using standard drive carriers. These drives will be supported across the ProLiant product

line.

As is already the case with hard disk drives, HP is working to develop separate classes of SSDs, each designed to meet the

specific capacity, performance and reliability requirements for particular applications. Table 2-1 summarizes the current goals

for creating Entry, Midline, and Enterprise SSDs in the future as the technology continues to evolve.

Table 1-2. Current goals for classes of HP server SSDs

Entry / Midline Enterprise

Interface 3 Gb/s SATA 6 Gb/s SAS dual port

Reliability Optimized for constrained workloads Optimized for 100% workloads

Latency <1 ms for 512 byte random writes <100 us for 512 byte random writes

Maximum capacity 2 times Enterprise SSD Equal to SFF15K SAS disk drives

Other features Full memory path error detection

Always on write cache with hot removal

protection

Full memory path error detection

Always on write cache with hot removal

protection

Power Consumption

(Active)

Under 2 watts 2

–

9 watts

Additional resources

For additional information on the topics discussed in this article, visit:

Resource URL

HP Solid State Storage

www.hp.com/

o/solidstate

“Solid state drive technology for ProLiant servers”

technology brief

http://h20000.www2.hp.com/bc/docs/support/SupportMa

nual/c01580706/c01580706.pdf

HP ProLiant drives (including solid state drives)