EXCLUSIVE - HP StorageWorks 2000 Modular Storage Arrays
Performance under load isn’t great but HP’s new IP and FC SAN appliances look good candidates for SMBs with small pockets.
For many of the latest SAN solutions a number of storage vendors have decided to combine both FC and IP capabilities in the same unit. HP's latest StorageWorks products take the opposite tack as the new 2000 Modular Storage Arrays (MSAs) are offered with either fibre channel or iSCSI RAID controllers. The twelve bay disk cabinets are the same you just choose which SAN you want to go with.
These are aimed squarely at SMBs with limited budgets and a glance at the price tags shows that HP looks to have hit the mark for value although the prices we've listed don't include any hard disks. We take an exclusive look at both products as on review we have the 2012i and 2212fc arrays.
The 2U chassis accepts high performance SAS and high-capacity SATA drives and you can mix and match them in the same chassis as required. There's plenty of fault tolerance on tap as the chassis supports two RAID controllers along with dual combined fan and power supply units.
HP offers a range of controller options with base FC and iSCSI models coming with a single controller. A pair of standard controllers provides active-active failover, whilst the enhanced model such as the 2212fc on review has two controllers and a faster processor. Expansion options look good as the single SAS port on the RAID controllers supports up to three disk shelves enaqbling capacity to be boosted to a theoretical maximum of 36TB using SATA drives.
Instead of using a battery backup pack to protect the cache contents the RAID controllers use a combination of a 512MB CompactFlash card and capacitor. If there's a power failure the cache contents are written to the card and the main advantage here is the capacitor takes far less time to charge than a battery and can provide full protection much quicker. The two controllers are also joined with a high-speed, direct link. Data written to one controller is synchronously mirrored to the other with the aim of improving general performance by reducing internal system traffic between the controllers.
We kicked off with the iSCSI array and had no problems with basic installation as you simply point a web browser at the controller's dedicated management port. The tidy web interface opens with a basic status display for the array cabinet, virtual disks and controllers with options to drill down to individual components. The enclosure view shows which bays in the array and any attached expansion units have drives in and hovering the pointer over them reveals the drive type and model lurking inside.
We began by creating virtual disks, or vdisks, where you select physical drives, pick from a choice selection of RAID array types and assign hot-spares. Some on-line array expansion options are provided, as although you can't migrate from one RAID type to another it is possible to add more drives to existing arrays and expand into them although this doesn't include mirrors.