Fusion’s directCache software transforms ioMemory into a block-based storage cache by intelligently placing the most frequently accessed data in flash memory for increased performance. Tightly integrated with Fusion’s flash-optimized ioMemory subsystem and Virtual Storage Layer, directCache in a non-virtualized server minimizes translation layers to deliver lower cache latency and enable immediate application workload performance improvements. Ideal for environments where entire data sets are too large to fit in flash, directCache provides cost effective performance acceleration. Customers not only benefit from a high performing cache solution, but also with very low memory consumption.
Designed for any block-based storage volume whether on a disk array, iSCSI target, SAN, or direct attached storage, directCache enables terabytes of cache acceleration to speed performance of non-virtualized servers and associated primary storage.

directCache seamlessly integrates with existing block storage devices requiring no changes to the
storage infrastructure, preserving existing SAN and DAS configurations. Host operating systems continue to see and use block devices as-is. Applications receive maximum benefit with minimum disruption since only the most frequently accessed blocks are cached providing instant performance gains. Existing data protection strategies remain in-place without disruption.
Requests satisfied from ioMemory in the server can be hundreds of times faster than those from disk-based solutions. ioMemory with directCache removes the overhead of legacy storage protocols by integrating directly with a native PCIe implementation.
directCache delivers up to hundreds of thousands of IOPS, reducing the need to configure disks for IOPS and eliminating the need to overprovision drives. The elimination of complex tiering systems based on Fibre Channel or SAS disks further reduces costs and complexity.
|
Product type |
Add-on software module for ioMemory VSL |
|
Cache type |
Fully associative cache |
|
Cache mode |
Write-through |
|
Minimum cacheable block size |
512B |
|
Max cache instances per host |
64 |
|
Additional CPU & RAM overhead |
No noticeable increase over the ioMemory VSL requirements |
|
Product architecture |
Independent Linux kernel module, Window volume/disk filter driver |
|
Management |
CLI and ioSphere-based GUI |
|
Power loss protection |
Yes |
|
Connectivity/Power |
PCI Express 2.0 x4 |
|
ioMemory VSL driver |
3.2.3 |
|
Compatible cache devices |
All Fusion-io and OEM ioDrive1 and ioDrive2 family devices--ioDrive, ioDrive Duo, and ioDrive Octal products, and mezzanine form factors |
|
Operating systems |
64-bit Microsoft Server 2008/2008 R2, RHEL 5/6, SLES 11 SP1/SP2 |
|
Host cluster |
MSCS, VCS 5.x and above on RHEL, Linux native cluster |
|
Supported external primary storage |
Disk, disk partition, hardware RAID volume, software RAID volume, iSCSI LUN, Fibre Channel LUN |
Visit http://www.fusionio.com
To speak with a Fusion-io specialist in the U.S. call: +1 (801) 424 5500
To speak with a Fusion-io specialist outside the U.S.: http://fusionio.com/company/contact
DMalmborg
17 Sep 2012 5:17 pmjfrancis
17 Sep 2012 8:32 amrohit
24 Jul 2012 12:04 am