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Technology considerations in selecting a direct at ached
storage solution for HP ProLiant Gen8 servers
Technology brief
Introduction ......................................................................................................................................... 2
Interconnect technology......................................................................................................................... 2
Serial ATA ....................................................................................................................................... 2
Serial At ached SCSI ......................................................................................................................... 2
Interoperability ................................................................................................................................. 2
Expanders ....................................................................................................................................... 2
SAS/SATA link speed specifications and performance .......................................................................... 3
Drive controller technology .................................................................................................................... 3
Host bus adapters ............................................................................................................................. 4
Smart Array controllers ...................................................................................................................... 4
Storage infrastructure ............................................................................................................................ 5
HP SmartDrive carriers ...................................................................................................................... 5
Internal expander backplanes ............................................................................................................ 5
BladeSystem direct attached storage ................................................................................................... 6
HP hard disk drive categories ................................................................................................................ 6
Solid state storage technology ............................................................................................................... 7
SSD longevity ................................................................................................................................... 8
Over provisioning ......................................................................................................................... 8
Wear leveling .............................................................................................................................. 9
Wear Gauge ............................................................................................................................... 9
SSD performance ............................................................................................................................. 9
IO Accelerators .............................................................................................................................. 10
HP quality focus ................................................................................................................................. 11
Conclusion ........................................................................................................................................ 11
For more information .......................................................................................................................... 12
... Ce manuel est également adapté pour les modèles :
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