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The px2 is designed for easy serviceability. The power supply is an external brick and the cover slides off after removing three screws. Fan removal requires opening the case and probably removing the small backplane board. The latter is easy, though, because the backplane is mounted on a metal plate that is secured by two screws and plugs into a connector on the main board.

Iomega px2-300d board

Iomega px2-300d board

That's a PCIe x4 connector up at the top left of the photo. It matches up with a removable card slot cover on the back panel. In the px6-300d review, I mistakenly said the similar slot on it had nothing behind it. The photo below of the px6-300d board shows I was wrong, since a PCIe X4 slot is clearly shown at the photo top right.

Iomega px6-300d board

Iomega px6-300d board

Iomega apparently has re-evaluated the Intel device cooling requirements on the px2, since the Companion I/O device has no heatsink and the D525 heatsink no longer has a fan.

Table 1 has a summary of the key components for both NASes.

  px2-300d px6-300d
CPU Intel Atom D525 @ 1.8 GHz Intel Atom D525 @ 1.8 GHz
Ethernet Realtek RTL8111f (x2) Realtek RTL8111e (x2)
Flash 1 MB 1 MB
Companion I/O Intel 82801IB ICH9 ?
SATA In 82801IB


I/O Nuvoton NCT6776F
Super I/O
Fintek F71808E
USB 3.0 NEC D720200F1 Fresco Logic FL1000G
Table 1: px2-300d component comparison

I suspect the px6 has the same Intel 82801IB ICH9 Companion I/O as the px2, but couldn't positively identify it due to its heatsink. I didn't pay enough attention on the px6, but suspect that there was a SATA expansion chip on the backplane to handle its total of six drives. There was not one on the main board.

The socketed 2 GB DDR3 SoDIMM with a second empty slot has been carried over from the px6. I didn't again ask Iomega whether more RAM could be added to the second, empty socket without voiding warranty. But the exact response from my last query was "we don't formally support this currently, but the hardware is capable".

The review unit came with two Hitachi Ultrastar 7K3000 2 TB (HUA723020ALA640) drives installed, which brought the total power consumption to 32 W. There is a programmable idle drive spindown, but I could not get it to kick in, so could not measure power draw with drives spun down.

Fan noise was low, but I could clearly hear the drives spinning and chattering away in my quiet home office. So I rate noise as medium low.


The px2-300d's feature set looks mostly unchanged from our last look in the ix2-dl review. There is no online emulator posted for the px2, but you can use the px6-300d emulator to get a good feel for the product. The emulator hasn't been updated since I last looked at it and doesn't include the video surveillance features, for example. The All Features screenshot below provides an overview of the px2's capabilities.

Iomega px2-300d All Features screen

Iomega px2-300d All Features screen

This bulleted feature summary below provides a bit more feature set detail.


  • Network file sharing via SMB/CIFS, NFS, AFP
  • WebDAV support
  • Windows DFS support
  • HTTP / HTTPS file and admin access
  • FTP, SFTP and TFTP servers
  • Single, RAID 0, RAID 1 volumes
  • Multiple volume support with expansion
  • AES-256 optional volume encryption
  • iSCSI targets with ISNS support
  • EXT4 filesystem


  • Network Backup: Schedulable (smallest interval is one day) to / from rsync targets and SMB/CIFS shares
  • Apple Time Machine backup
  • Auto file copy from PTP-enabled digital cameras


  • Recording and viewing of up to 16 IP cameras [supported models] via MindTree SecureMind (1 camera license included)
  • AXIS Video Hosting System support
  • UPnP AV / DLNA media server (Twonky Media)
  • Photo slideshow (uses Cooliris)
  • iTunes server
  • BitTorrent downloader


  • Secure Web-based remote access and site-to-site backup (Personal Cloud)
  • Amazon S3, Mozy, EMC Avamar, EMC Atmos cloud backup


  • Dual Gigabit Ethernet interfaces with VLAN and failover modes
  • SNMP support
  • Joins NT Domain / Active Directories for account information
  • Certified for Citrix XenServer 5.6, Windows Server 2003, Windows Server 2008, Windows
    Server 2008 R2, VMware vSphere 4.1, EMC E-Lab tested
  • User level quotas
  • Email alerts
  • Logging
  • File upload via Bluetooth
  • USB printer serving
  • UPS shutdown synchronization via USB

Iomega has made a few notable changes since we looked at the px6. The filesystem is now EXT4 vs. XFS. This could be part of the reason for the px2-300d's improved performance, which is more in line with what I've seen on D525 Atom based NASes from Synology and QNAP. Volumes can now be also encrypted with 256 bit AES.

But a few competitive weaknesses still remain, namely:

  • No RAID migration and expansion
  • No JBOD
  • You can limit access to shares by user and/or group. But you can't control access by service. So you can't shut off FTP access to certain shares, for example
  • No iSCSI encryption or authentication and no target multiple connects
  • No IPv6 support

As on the px6-300d, RAID level migration and expansion aren't supported. But volume configuration is still pretty flexible, although your options are limited with only two drives to work with.

Here's a shot of the Drive Management screen showing normal (Shares), iSCSI (iomega) and encrypted volumes (secret). You can create plenty of volumes. Once created, you can expand a volume or delete it, but you can't encrypt it.

Drive management

Drive management

Other changes and continuing complaints are:

  • EMC Atmos has been added to the Mozy, Amazon S3 and EMC Avamar cloud backup options
  • There is still no Windows or MacOS client backup software bundled
  • You still get only one camera license for MindTree SecureMind surveillance
  • Personal Cloud setup still requires router port forwarding. See the Home Media Network Hard Drive - Cloud Edition review for details.
  • There are no LifeLine apps listed for the px2-300d and only four for the px6-300d (which should work on the px2)

I've put a few more relevant screenshots into the gallery below.

Image Gallery

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