ISS Technology Update, Volume 9, Number 2

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HP ISS Technology Update

Volume 9, Number 2

Keeping you informed of the latest ISS technology

Smart Array flash-backed write-cache..................................................................................................... 2

HP Smart Array Erase Drive function ...................................................................................................... 4

Meet the Expert—Bill Hanlon ................................................................................................................ 5

Contact us .......................................................................................................................................... 6

Recently published Industry-Standard Server technology papers

Title URL

HP Virtual Connect technology implementation

for the HP BladeSystem c-Class, 4th edition

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

nual/c00814156/c00814156.pdf

HP VMware ESXi management environment http://h20000.www2.hp.com/bc/docs/support/SupportM

nual/c02000740/c02000740.pdf

HP ProLiant Server Power Management on SUS

Linux Enterprise Server 11

http://h20000.www2.hp.com

/bc/docs/support

SupportM

nual/c02011017/c02011017.pdf

Drive technology overview, 3rd edition http://h20000.www2.hp.com/bc/docs/support/SupportM

nual/c01071496/c01071496.pdf

HP power and cooling technologies for the data

center

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

nual/c02018535/c02018535.pdf

HP Industry Standard Server technical papers can be found at www.hp.com/servers/technology

Summary of content (6 pages)

PAGE 1
HP ISS Technology Update Volume 9, Number 2 Keeping you informed of the latest ISS technology Smart Array flash-backed write-cache..................................................................................................... 2 HP Smart Array Erase Drive function ...................................................................................................... 4 Meet the Expert—Bill Hanlon ............................................................................................................
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Smart Array flash-backed write-cache The HP flash-backed write-cache (FBWC) system offers important advantages over battery-backed write-cache (BBWC) systems. HP designed the FBWC with NAND 1 flash devices so that power is not required to retain cache data. There is no longer a 48-hour battery life limitation and the data will be posted to the disk drive the next time you power up the server. HP has engineered the FBWC to function with long-life super-capacitors (Super-caps) instead of a battery.
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Figure 1-2.
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which is equivalent to a disabled mode to avoid bus contention. When system power is lost, the FPGA waits for the clock enable signal of the Smart Array controller to transition to low, signaling that the controller has stopped driving the DDR2 bus. At this time, the FPGA assumes control of the bus and begins moving data from the DRAMs to the non-volatile NAND flash memory on the cache module. Upon the next power up, the FPGA restores the cache by moving data from the flash memory to the DRAMs.
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Meet the Expert—Bill Hanlon Bill Hanlon’s title is Master, ISS Integrated System Test, but his unofficial title should be “One of a kind” because of his unique skills and mode of transportation—he drives to work everyday in his reliable 1957 GMC pickup truck. Bill joined Compaq in 1987 as a member of the third level support organization. Now, he writes test software for new server products and helps to debug problems that his software discovers. Unlike his pickup truck, his job is unpredictable.
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