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Analysis Tegile has announced the first mainstream multi-tiered flash array in the storage industry. What does it do and how does it do it?
Tegile has a line of two-tiered hybrid flash and disk drive arrays, and now has a two-tiered all-flash array. Think of the updated IntelliFlash HD as a normal high-performance Tegile all-flash array, like its 2U T4700 with 88TB of raw fast flash capacity, hooked up to an IntelliFlash HD array with many TBs of raw slow flash.
IntelliFlash - HD - Access - NVMe - Flash
The updated IntelliFlash HD can have a tier of fast access NVMe flash and a separate tier of SAS SSD flash which is slower to access and less expensive. All-SAS configurations are still available by the way.
In the mixed NVMe/SAS systems our understanding is that 3.84TB or 7.68TB HGST Ultrastar SS200 SAS-connected SSDs are used in this capacity tier, with 3.84TB or 7.68TB HGST Ultrastar SN200 NVMe SSDs used in the faster performance tier.
Performance - Compare
How does their performance compare?
The NVMe tier can read data more than three times faster, write it two times faster, and react five times faster (latency) than the SAS flash tier.
Tegile - IntelliFlash - HD - August - OEM
Tegile's IntelliFlash HD was originally announced in August 2015 as an OEM'd InfiniFlash JBOF (Just a Bunch of Flash drives) from the then-independent SanDisk, which was a Tegile investor. WD then bought SanDisk.
Back then the IntelliFlash OS supported snapshots, clones, thin provisioning, inline deduplication and compression. It had VMware integration via SRM, VAAI, VASA, and VVOLs and provided unified block (FC, iSCSI) and file (NFS, CIFS/SMB3) access. The product could replicate data to Tegile's then-hybrid arrays. Tegile now has a line of all-flash arrays as well.
IntelliFlash - HD - System - Components - Base
The updated IntelliFlash HD system has two components: a 2U base chassis controller and one or two 4U expansion capacity enclosures. These contain up to 72 SAS SSDs each. The base chassis has...
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