storage hardware

Tegile dives into all-flash array market with T3800

Antony Adshead

Tegile has added two arrays to its range of hybrid flash devices in a move that sees it fully debut in the all-flash array market.

At the top of its range Tegile has added the T3800 all-flash array, a 2U box that starts with 44TB of raw flash in SanDisk 2TB eMLC drives. It offers 350,000 IOPS and scales to an effective (ie, assuming a 5x data reduction ratio) capacity of nearly 1.7PB when up to two Tegile 4U expansion boxes are added.

Tegilearray.jpg

Meanwhile, Tegile has added the T3400 hybrid array, albeit a hybrid array that can comprise up to 50% flash compared to around 5% on the previously top of the range HA2800. The T3400 is a 2U box that scales from 22TB and offering up to 250,000 IOPS comprised of a 50/50 split between SanDisk 2TB drives for data and 200GB HGST drives for metadata.

Flash capacity on the existing HA2800 maxes out at 4.4TB, and can be used as an all-flash array, but expansion shelves with HDDs see it potentially achieve a total hybrid capacity of 742TB.

With added 4U expansion boxes the T3400 can scale to a shade under 1.1PB. Tegile’s expansion boxes have 72 slots for 2.5” drives and can house either 2TB flash or 1TB HGST 7,200rpm HDD.

Tegile uses SanDisk 2TB eMLC flash. eMLC is a name given to MLC flash that originated in consumer products but has been beefed up for enterprise use. Tegile claims write endurance for its flash drives of 10PB of writes in constant use for around seven years.

T is for Tegile

The two new boxes are additions to Tegile’s existing range of seven HA-prefixed hybrid flash arrays that range from the entry-level HA2100 with 600GB of flash and total capacity of 22TB raw (up to five times that with dedupe and compression) up to the HA2800 with 4,400GB of flash and 44TB of raw capacity (also up to five times that figure with dedupe and compression).

Tegile’s multiprotocol (iSCSI, Fibre Channel and NAS) dual controller hybrid arrays use a combination of DRAM cache, MLC and SAS HDD storage tiers with a ZFS-based operating system adapted by Tegile to provide data deduplication, compression, Raid enhancements and a performance-boosting feature called Metadata Accelerated Storage System (MASS).

MASS allows data, once ingested, to be dealt with via just its metadata headers rather than the full copy, and these are kept in cache or SSD tiers.

Why did Tegile feel the need to add these two devices? CEO Rob Commins said: “We talked to some customers with analytics and online transactional use cases and found a need to move them to performance-biased products such as the T3800.

“But where there is, for example, a retail user with databases and a requirement for low latency but also capacity-based need, for example for product images or video, then they need some bulk storage too, as in the T3400.”

Why the new T prefix? Commins said the existing HA prefix stood for high availability, but with all Tegile devices being dual controller this had become redundant and it had now adopted a simple “T for Tegile”.


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