Data Robotics delivered their "super-sized" version of the Drobo earlier this year. DroboPro has 8 drive bays into which you can drop 3.5" SATA drives of almost any capacity, from the old 160 GB model you've been using to hold the backup of your iTunes library to that 2 TB Western Digital Caviar drive you just purchased. Using a proprietary storage technology called BeyondRAID, Data Robotics makes it easy to use a DroboPro to give you a big box 'o storage right now, and easily expand in the future.

Data Robotics recently lent me a DroboPro for a detailed review, and I was able to give it a thorough workout. Read on to find out more about the DroboPro and an excellent deal available to readers of TUAW.

We've gotten more than a few emails over the past 24 hours ruminating over how Snow Leopard has changed the way that file and drive sizes are calculated. It's been traumatic for some, having a psychological effect similar to Pluto losing its status as a full-fledged planet.

A great post over at MacFixIt explains the math about determining a file size -- and how the folks at Apple decided to follow the definitions of a "gigabyte," "kilobyte" and "megabyte" as they are commonly used in English (or, put a different way, just like in the metric system). So, a kilobyte is actually 1,000 bytes, and "officially" has been since 1999. Technically, the word for a 1,024-byte chunk of data is a kibibyte. Having kilo-, mega- and giga- SI prefixes refer to powers-of-10 in almost all realms, and powers-of-2 in information technology, was apparently becoming too confusing.

What does that mean in the real world? MacFixIt sums it up best:

"For all intents and purposes it means absolutely nothing! It does not change anything in how the computer runs, or how efficient it is at storing items on the drive. It has not compressed any of your data or somehow altered it to 'free up' any more space. Rather, it just means that everything will be reported as being slightly larger than [it] used to be, with the amount of difference depending on the prefix being used (the larger the prefix, the greater the percent difference)."

It's not a new issue at all for people dealing with changing clothing sizes, especially for women. What used to be a size 12 back in the 1950s is considered a size 6 today. And a kilobyte weighing in at 1,024 bytes yesterday is now 1,000 bytes today.

It's worth noting that you will see different file sizes reported when moving items between Snow Leopard and earlier systems, and the amount of free space on removable drives will appear to fluctuate -- but byte for byte, you've got the same amount of space in each case.

Need more hard drive space in your MacBook Pro? Well, if you're not scared to get your hands dirty with a little hacking, and not too attached to your DVD drive, you can hack your way to twice the hard drives.

This particular user faced a dilemma when purchasing his new MacBook Pro: get the faster SSD hard drive or the larger capacity rotational drive. Instead of settling on either of those options, he removed his DVD drive, hacked together an adapter to interface with the proprietary Apple connector, and installed a second hard drive. The result is a "best of both worlds" scenario for him; a faster boot time and responsiveness, and plenty of space available for movies and music.

He posted several pictures and instructions if you're ready to take the plunge into a dual-hard-drive notebook. There is some harsh language in the post, so you may not want to open this at work.

Any hacks like this should be performed only by skilled users. This will void your warranty, folks, so proceed at your own risk.

[via Hack A Day]

Apple has just released two firmware updates, one fixing issues with Bluetooth and the the other fixing the MacBook Pro hard drive noise issue.

The first, Bluetooth Firmware Update 2.0.1, fixes bugs and improves compatibility with the Apple Wireless Mighty Mouse and Apple Wireless Keyboard. It's available for all Macs with Broadcom Bluetooth chipsets, which include all unibody MacBooks and MacBook Pros, MacBook Airs, and all other Macs introduced in 2009.

The other one, Hard Drive Firmware Update 2.0, which has been promised by Apple for some time now, fixes the widely reported issue with hard drive noise. This issue only affects MacBook Pros with 7200 RPM hard drives introduced in June 2009 or later, so this update is only available for those Macs.

Both of these updates are available through Software Update, or they can also be downloaded on Apple's support downloads page.

Last week we reported on a thread at Apple's Discussion Boards about an issue affecting some 15" MacBook Pros. Specifically, their hard drives seem to be spinning down and even parking themselves at inappropriate times, like in the middle of a task. It's understandably frustrating, as that would slow things down considerably and offer unwanted "quality time" with the Marble of Doom. According to CNET, Apple is aware of the issue and working on a fix right now.

There's no word on when it will become available, so affected owners should just hold tight for a few more days. Note that one user on the discussion boards claimed to have fixed the problem by creating a new admin account on his machine. We haven't experienced the problem or replicated this fix, so take it for what it's worth.

CNET notes that the issue seems to be limited to the 15" model with a 5400 RPM drive, but at least one user in the discussion board claims to have swapped drives to no avail.

[Via MacNN]

My MacBook Pro and I had a bit of a rendezvous this past weekend. She's a 15 inch Core Duo with 2GB of RAM. Although she'll occasionally get as hot as a toaster oven (leaving red marks on my lap at times) and mooed like a cow when we first met, she's been a consistent workhorse for me.

But her hard drive needed a transplant. Sick of her sluggish performance and hard drive clicking noises, I decided that it was time to fix her up. So, I replaced her 320GB hard drive with, surprise, a 320GB hard drive -- this time a Fujitsu model instead of the Toshiba it replaced. Not because I thought the Fujitsu was any better than the Toshiba it'd be replacing, but because it was the least expensive drive I could find.

Although the hard drive installation went successful, it wasn't without its fair share of bumps along the road. Hopefully, the bumps I experienced could provide many some guidance on what to do as well as what not to do when upgrading your hard drive.

There's a thread at Apple's Discussion Boards about an issue that's bothering a number of users. Specifically, the current model 17" MacBook Pros seem to be experiencing hard drive lag. Several users report hearing the hard drive park itself, but at inappropriate times, causing the Marble of Doom to appear and bringing all tasks to a halt. This comes a short time after other users have reported a strange beep.

One user reported no red flags while running Activity Monitor while another went so far as to swap the hard drive to no avail. If you're having this issue, or if you've solved it, please let these folks know.

Update: A user calling himself theycallmefreddy reportedly fixed the problem late this morning by creating a 2nd user account. You can read his post here.

Apple quietly today introduced a new 2TB Time Capsule, its combination of a wireless router and network hard drive, for $499, while dropping the price of the 1TB model to $299, and discontinuing the 500GB model.

The new 2TB Time Capsule is available immediately and is shipping today from Apple's online store. This should hopefully be a welcome addition for those who back up many computers with Time Machine, as many use more than 1TB for their Time Machine backups.

[via MacRumors]

Yes, it's a lot of storage -- but the drive's form factor won't fit into any currently available Mac laptop. (Note the update at the end of this post)

I was pretty excited when the Western Digital news release hit my inbox. The new drives, the industry's first in that size for portables, have pretty good specs and capacious storage space. The problem really is the size. With Apple in the business of providing slim notebooks, the drive is just too tall (12.5mm) to make it into any Apple portable, which maxes out at a drive size of 9.5mm.

The drive will be available in a USB enclosure, and WD is also offering a 750 GB version of the drive as well. The 1 TB drive lists for US$250, while the 750 GB drive is $189. Those prices are for the drive alone. Mounted in a USB enclosure the 1 TB drive sells for $300.

Currently the largest 3rd party drives you can get in current Mac laptops max out at 500 GB.

The Mac Mini may be able to house the new drive, but it would be a pretty tight fit, and according to our Steven Sande, may require the removal of the SuperDrive.

Update: We've had a variety of responses to this post, with different ideas about which, if any laptops could take this new high capacity drive. I thought the quickest and best approach would be to try the experts at Other World Computing, who make a living selling replacement hard drives for Mac Desktops and portables. The tech there told me that the last generation 17" MacBook Pro can take the 12.5mm drive, but that the 15" model can't. He also said none of the unibody MacBook Pro models can take a drive of that size. I'm sure some won't accept this information either, but these were the most expert opinions we could find since Western Digital wasn't sure and Apple doesn't generally comment on such things. Since the drives are just shipping, we'll wait for some real world experience and report back. Thanks to all who commented.

There's a thread on Apple's Discussion Boards this week regarding trouble with the latest MacBook Pros with 7200RPM drives. Specifically, the machines are clicking (most users report the click as coming from the drive's location) followed by a beep that's, as far as anyone can tell, not coming from the speaker, as demonstrated above. It's quiet in the video, so crank up the volume and listen closely. Finally, its occurrence is unpredictable.

No clear answer has been reached yet, but Other World Computing (OWC) shared some relevant information with MacNN:

"The issue may be with Seagate's Momentus 7200.4 G-Force hard drives ... Affected units are said to spin up and down frequently, which may be generating the sounds reported by users ... The G-Force technology is said to be mostly irrelevant on Macs in the first place, as a result of pre-existing anti-shock protection."

No one at the TUAW offices has one of these machines, so we haven't experienced the problem. If you have, let us know in the comments and we'll see what we can dig up. Thanks, and good luck.

Are you wondering what to do with the 2.5" SATA drive that you yanked out of your MacBook or Mac mini so you could replace it with a SATA Solid State Drive? For $19.99, the OWC Express USB 2.0 bus-powered enclosure provides a new home for that old drive so you can use it as a backup or spare drive.

The Express enclosure is just slightly larger than an iPhone at 3.07" x 5.12" x .55" (78mm x 130mm x 14mm), and weighs just 2 ounces (56g) empty. Just toss in your old 2.5" SATA drive and you have a bus-powered USB 2.0 drive that easily fits in your pocket. You can also shop around for new bare SATA drives; a 500GB, 5400 RPM drive can be had for as low as US$97 (I'm sure you can find them for less!), making for a low-cost and portable backup solution.

There are other similar USB 2.0 enclosures out there; MacAlly's PHR-250A (US$19) and StarTech SAT2510U2 Infosafe (US$17.96) are about the same size and weight as the Express, while the Vantec NexStar SX NST-285S2-BK (US$22.02) and Sabrent EC-UST25 (US$14.97) are larger and heavier.

What's your favorite use for disk drives that you've pulled out of your Macs? Leave a comment below.

A reader recently contacted us with a question regarding her decision to recycle an older iMac computer. She wanted to know how she could clear/reformat the hard drive, but didn't have the disks that came with the system. So, we thought we would take a minute to tell you how you can cleanse your hard drives before getting rid of your computer. I'm going to show you how to wipe the hard drive using Target Disk Mode, since this will work even if you don't have the install disks.

Step 1: Get a FireWire Cable
Both of the Macs will need to have FireWire, which means everything between the iMac DV and the current lineup (except for the MacBook Air and unibody MacBook) is eligible. You will also need a FireWire 400 cable so you can connect one end to the old Mac, and the other end to another Mac. If you don't have one of these cables, you can easily pick up one online or at a retail store. If both of the Macs support FireWire 800, you can use one of those cables as an alternative to 400; it will be faster. If one has only a 400 port and the other has only an 800 port, a converter cable (available online for less than $10) is what you need. Once you have the FireWire cable, just simply connect the two computers together.

Step 2: Boot into Target Disk Mode on the old Mac
Shut down the old Mac that will be receiving the hard drive cleaning, and reboot it while holding down the "T" key on your keyboard. After a few moments, you should see a FireWire symbol appear on the screen -- when you see this, you are in FireWire Disk Mode (FDM). When in FDM, your old Mac's hard drive should show up on the new Mac as a connected external FireWire drive.

Step 3: Do some Disk Utility magic
Open Disk Utility.app on your new Mac (located in /Applications/Utilities), and click on your old Mac hard drive in the selection area on the left. Note that you should click on the drive, and not the partition (often called "Macintosh HD") to ensure a complete disk wipe. The disk drive will most likely have a FireWire icon to denote that it is connected as an external disk. Once you select the drive, click the Erase tab, and click Security options.

In this section of Disk Utility, you will be able to select a few different erase options that will also add security to the standard disk erase. First, lets specify a name for the drive -- in the name field type what you would like the drive to show up as when it is erased, otherwise it will default to "Untitled."

Continue reading to learn about security options and how to fully erase the hard drive on an old Mac.

If you're looking for a significant performance boost for your middle-aged laptop, replacing your aging hard disk with a solid state disk (SSD) could give your computer a new lease on life.

Solid-state disks (pictured, bottom) differ from traditional hard disks (top) in that they're not constructed with platters and heads. Instead, they're more like giant thumb drives, containing memory chips designed to be written and re-written without wearing out. The upside to this is that SSDs are much, much faster to read and write to, making booting and starting applications lightning-quick.

I recently installed an Intel X25-M SSD, a 160GB drive, as a replacement for a 120GB Toshiba hard disk for my 2006-vintage black MacBook. Spendy, for sure, but for the performance increase and the extra life it adds to my MacBook, well worth it. Plus, I had my state tax refund burning a hole in my pocket.

The performance is phenomenal. The old disk booted in a respectable one minute, 49 seconds. The new disk booted in a blazing 31 seconds. Ridiculous. Windows also boots in less than half the time it took before. Photoshop CS3 launches in five seconds, Illustrator CS3 in nine seconds.

Getting the drive was simple: It's moving the data that takes time. Read on to see how you can migrate your data like I did -- including a Boot Camp partition -- with little fuss.

Volitans Software has announced a giveaway to publicize their hard disk diagnostic utility, SMART Utility for Mac. Between now and 11:59 PM EST on December 24th, you can enter a giveaway in which the winner gets a choice of either a new Momentus 5400.6 SATA 500GB laptop hard drive or a Barracuda 7200.11 SATA 1.5TB desktop drive.

You don't need to purchase SMART Utility or even try out the software to enter, although Volitans would be happy if you download a free trial. SMART Utility provides more information than the SMART Status in Apple's Disk Utility, including predictive fault detection that can inform you that a drive is about to fail. Disk Utility only gives you an indication when your drive has already failed. While you could always run smartmontools from the command line, SMART Utility displays drive information in a clear, easy-to-read format.

Only one entry per person is allowed, and the winner will be announced on Christmas Day. Another 1.5TB of storage for the pile 'o equipment in my home office sounds like an incredible Christmas present!

By now, you've probably heard about Drobo. It's the ultimate RAID-like array, with USB and Firewire 800 connections, that allows you to store up to 6 terabytes using 4 hard drives (you get about 4.1 TB of usable space, since some of the room is used for RAID redundancy -- see the Drobolator capacity calculator for the details). Not too long ago they released DroboShare, a way to turn Drobo into a NAS (network attached storage device) with Gigabit Ethernet. If you have both a Drobo and DroboShare, you can now run DroboApps.

Because Drobo is built on a small version of the Linux open source OS, you are able to run these lightweight applications that can do some awesome things. There are currently around 20 applications that can create an iTunes media server (Firefly), or limit the total size of a Time Machine backup (Time Tamer), among other functions.

If you're a Drobo owner, you might want to check out these cool new applications. And if you're a developer, why not take a look at the Drobo development SDK?