Storage hardware

Quantum aims at Data Domain and claims 4x throughput advantage

Antony Adshead

Quantum has announced a new DXi-series disk backup device – the DXi6800 – and tape library – the i6000.

The backup device is targeted at customers that might choose EMC’s Data Domain DD670 or DD860 data deduplication hardware, boasting ingest rates of between three and four times those products at 16TB per hour. Quantum manages this with upgraded CPU, memory and bus bandwidth in the device controller over the older Data Domain products.

The new Quantum hardware is a target data deduplication device aimed at backup use cases. That means data is sent to it across the LAN or WAN before data reduction takes place, although the DXi6800 can receive partly deduplicated data from branch office locations equipped with Quantum’s Accent or DXi V1000, which can carry out some data deduplication at source.

Data deduplication for backup is an increasingly common priority for UK datacentres. The 2013 Computer Weekly/TechTarget IT priorities survey found that 27% of respondents planned backup data deduplication projects this year, compared with 19% last year.

The DXi6800 backup devices scales from 13TB to 156TB. It comes with pay-as-you-grow capability in which customers buy 13TB of drive capacity at a time but receive 26TB that can be switched on with the purchase of extra licences.

The device uses exclusively 3TB drives, and to mitigate the potentially horrendous RAID rebuild times associated with these large-capacity drives it shares the workload across multiple drives using its Dynamic Disk Pooling technology, which is based on RAID 6.

Encryption is carried out by the DXi6800 during the deduplication process. Devices in the DXi family can replicate between each other and are compatible with Quantum’s Q-cloud service. The new product fits between the DXi6700 and DXi8500 data deduplication devices.

“It is aimed at customers that will replicate data to a central datacentre, as well as customers that care about encryption, such as financial and government users,” said Quantum product marketing manager Stephane Estevez. 

Quantum also announced that its i6000 tape library, which has a maximum capacity of 75PB, will become available in March. Quantum claims the i6000 offers the industry’s highest slot density for a tape library – somewhere between half and one-third of the floor space taken up by similar products from IBM, Oracle and SpectraLogic.

The announcement comes as tape undergoes a long-term decline in use, as witnessed in a recent SearchStorage.com purchasing intentions survey which found the use of tape as a backup medium was 66%, down from 86% five years ago.

Despite the decline in use, tape is still the cheapest form of data storage and is, to some extent, being repositioned for long-term archival retention, especially with the use of the Linear Tape File System (LTFS), which allows data to be stored on tape as it would be with disk in so-called tape NAS.


Image: Thinkstock


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