Fujitsu Eternus CS800 S3 Entry review

£10621
Price when reviewed

Fujitsu moved into the data deduplication space a few years ago, and it now wants to make this hot technology affordable for SMBs. In this review, we test the Eternus CS800 S3 Entry model, which combines big reductions in storage usage with good value and ease of use.

This model shares the same foundation as its CS800 brethren: namely, a top-quality Primergy RX300 S6 2U rack server. It comes equipped with a 2.4GHz Intel Xeon E5620, 24GB of DDR3 memory and two 800W hotplug power supplies.

For storage it has a pair of 300GB SAS SFF drives, split into mirrors for the OS and the index database. General backup storage is handled by ten 500GB SATA drives configured in a RAID6 array, and all are looked after by Fujitsu’s SAS 6G RAID card, which has 512MB of battery-protected cache.

You can’t upgrade capacity beyond 4TB and, unlike the larger models, the appliance doesn’t support Fujitsu’s DX80 disk expansion shelves. But the price includes all data compression and deduplication features, plus replication to a remote CS800.

Fujitsu Eternus CS800 S3 Entry

A key feature of the CS800 is how it presents storage as NAS shares, making for easy deployment. Furthermore, as data reduction is carried out at the appliance, it’s transparent to all host systems. It supports any backup software application, and will even deduplicate drag-and-drop copies to a share on the appliance. You also get Symantec’s OpenStorage plugin, which allows the appliance to present itself as storage servers to NetBackup.

We found installation simple, with a wizard guiding us through initial configuration and network port setup. The appliance has six Gigabit ports, five of which can be kept separate or bonded together in load-balanced, redundant teams; the sixth port is retained for service and maintenance functions only.

Next you can get down to creating network shares. Up to 128 CIFS or NFS shares are supported, either public or private, and for user access control you can enable workgroup or AD modes. Deduplication can be enabled on a per-share basis, and once set it can’t be removed. However, you can specify backup windows for a share, during which time deduplication is disabled.

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