It’s no secret that I’m a big fan of the A-Series LTO drives started by Quantum, and now licensed and sold by Cache-A. This review covers the newly released Prime-Cache from Cache-A. There are two other higher end models that offer more internal hard drive space and the option of multiple LTO drives, but for most small to medium size post houses the Prime-Cache model will do just fine, and it’s the least expensive.

This review is more of an overview of some of the functions, and does not cover every feature, option or workflow, and only gives a general overview on setup. My goal is to give you a good taste of what it can do for you and your post house and leave you with an idea of the kind of value it can offer your company, both in security as well as a new revenue stream.

If you have not already done so, you may want to give my last post a quick review, as it gives a history of how we ended up here after having lots of issues with our shelved HD backup system. I know that many people use hard drives for long term archival, and it’s understandable why. It’s cheap and space is plentiful. However, learn from our mistakes and be aware of the pitfalls of going that route.

There’s also a post by Scott Roberts that covers the workflow of the A-Series drives in his own special style.

Location of Device and Setup

When picking a location for the drive, you might be tempted to place it inside your edit bay. It’s a good looking box, small and sits on the desktop nicely. For testing purposes this is what I did, just because I knew I would want more interactivity with the device while reviewing it. But while the device is virtually silent when powered on, once the tape in the drive starts to shuttle during operation it makes more noise then you, or more likely your clients, will want while editing. It’s not terrible, but considering this device is controlled over the network from anywhere in your office, it makes sense to put it somewhere else. For us that was the machine room where we keep the multiple raid drives that sound like an airplane taking off.

Setup could not be easier. It’s pretty close to a zero configuration unit. You plug the unit into a power source, add a Gigabit Ethernet connection and power it on.

By default the unit will start up in DHCP mode which should work with most networks. If you want to assign a static IP (like we eventually did) you can easily do so through the web interface to the device.

At this point a quick check of the manual will tell you how to log in using the default user name and password and a web browser. Safari and Firefox are supported, but Windows Internet Explore is not due to some incompatibilities. This is what the default screen looks like.

While the Quantum drive relied on the web interface for almost everything, that’s no longer the case. You can actually perform your archive duties without having to visit here at all. I will cover this later when I discuss workflow.

One of the great things about this device is that through the web interface, Cache-A can send your unit software updates as they’re released. This makes upgrades pretty painless. While this is pretty much expected for Macs and PC’s these days, dedicated appliances like this don’t usually make upgrades so painless. We went through several small upgrades during beta testing and it was seamless. They would tell us a new version was out, and we would use the web interface to initiate the download. It would automatically download the software, install it and then reboot the computer.

The Hardware
The hardware is a combination of LTO-4 tape drive, internal hard drive, FTP server and computer all wrapped in one. It’s basically a archive appliance built around a PC running Linux. If you’re a linux nerd it’s Fedora Core10, specifically 2.6.27.5-117.fc10. While it is possible to hook up a monitor and keyboard and use the device directly, as you would any other PC, the real strength in this device is that it’s designed to be used over a network with multiple clients at the same time. You don’t need to be anywhere near the box (Except for tape exchanges obviously. I’m told they’re working on a way to change tapes via mind control but that’s probably a 2.0 software feature).

The case itself is relatively small, measuring just 11″H x 10.25″D x 4.5″W,  and it’s designed to sit on a tabletop. It’s all in black except for the Cache-A logo and power button on the front. While it’s designed to run upright to save on desk space, you can also use it horizontally, as long as the drive is right side up (the door will flip up if it is). This works well if you would prefer a rack or shelf for the unit.

On the front is access to the LTO-4 drive, a dual USB port for connecting a memory stick or external storage device and a big power button that glows blue when the unit is on. There are also a few activity lights that monitor the tape drive and hard drive usage. The LTO-4 drive will only write to LTO-4 tapes, but it is backward compatible and will read LTO-3 tapes from the Quantum A-Series drives.

TECH NOTE: This backwards compatibility is not part of the current software release but it expected in a future release. Hopefully a near future release. So if you have one of the Quantum A-Series drives, don’t let go of it just yet or you will not be able to read any of your old tapes.

The back is where you really get the idea that this is a PC. You’ll find all of the standard inputs and outputs, and a network status light that verifies it’s connected.

The appliance is designed to run over Gigabit Ethernet (1000 Bt), and at least in my tests I couldn’t get it to show up on the network even at 100BT. This shouldn’t be an issue for most post houses since you probably already have a fast network. And truthfully, if you’re going to use this device you really need a Gigabit connection.

The Workflow
In the previous version of the A-Series drives that Quantum came out with, the web interface to the unit was where you did nearly everything. Cache-A has taken a different approach. The Prime Cache creates a volume (they call this the vtape) that can be mounted directly on the desktop of the Mac, Windows or Linux. In fact on the Mac desktop you can see both the Mac share as well as the Windows Share.

So here is a simple example of how you might archive your projects.

Organize your projects/files that you want to archive on your hard drive. In our case, we have a “Projects to Archive” folder that each editor uses once he/she determines that a project is ready to be taken off line. Each project is prepped for archival by making sure there is not only a master export of the final video, but we also media manage the final sequence into a folder called “media”. This way when we come back for revisions we at least have an editable sequence that’s easy to modify.

We then create a dated folder in the form of YEAR-MONTHDAY. For example, September 21st 2009 would be represented as 2009-0921. If there is more then one folder for that same day, we just append a letter at the end – 2009-0921a.

We then organize the jobs into the folder in a way that gets each folder as close to 800 gigs without going over (yes, just like the price is right).

With each folder at around 800 gigs or less, it’s time to move some bits. There are two options here. Before we move on let me explain more about the vtape that i mentioned earlier.

The main purpose of the vtape is to be an intermediate between you and the tape drive. As the name implies (Linear Tape Open) the tape records in a linear manner. That means that unlike using a hard drive that reads and writes randomly as needed, a LTO tape is recorded from the start to the end. You can’t go back and remove a file or folder and then reclaim that space.

So help comes via the vtape.

The vtape is the name of the internal drive on the Prime Cache. It allows you to copy files from your computer to the Prime Cache and organize them however you like, and then copy them to the tape in one shot. You can even have the vtape mounted on multiple computers and have them all copying files to the vtape at the same time. This is how the device allows for multiple users simultaneously.

In our example we have chosen to do this organization locally prior to copying the files over, just because we prefer doing it that way and that’s been our work flow since getting the first A-Series drive (which had no vtape).

So back to our example…

Over your local network, mount the shared drive. If you’re on a Mac it’s under your network browser, and on Windows it’s under your Network Neighborhood. (Forgive me for not having tested this with a Windows machine, but I would have had to buy a PC to do that. I wasn’t willing to go that far for the review.)

The device shows up with the name “Archive” followed by a number. The number is the last 2 digits of your serial number. So in my case, the drive comes up as “Archive04″. You will need to type in the default user name and password as outlined in the manual (you can change this) and then you will see the volume called “vtape”. Double click to mount this to mount the hard drive on your desktop.

Here you will see two things. A file called “Eject” and a folder that represents the tape you inserted. By default, it’s a serial number that matches the tape itself. But this is easily changed to something more useful. (The serial number as a default is actually VERY useful if you have a high end system with a automatic barcode reader. It allows the drive to find tapes for you based on the barcode/tape name).

In the finder, just click on the name of the tape (the folder) and name it to whatever you like, keeping in mind good naming conventions. You wouldn’t want to call it…

“My-Really_AwesomeProject!!!!&Other%stuff***that’sImPOR$$tant”.

If you keep your names to alpha/numeric you’ll be fine.

Changing this to a more intuitive name now will help later when we get to catalog it. Once you change the name, you will hear the tape drive shuttle the tape as it changes the name on the tape itself.

As a side note, the Eject file will allow you to eject the tape  but in a somewhat confusing way. What you do is drag the file (named Eject) to the trash (you do not need to empty the trash) and the following dialog appears.

As you scan see, the dialog is a bit confusing. But if you do hit the “Delete” button, it does not erase the tape or delete anything, but in fact just ejects the tape. If this freaks you out and threatens to raise your blood pressure, just use the manual eject button on the face of the device itself. I would imagine this is a fix at some point.

With the tape inserted and renamed (you could have also renamed it after you copied files to it) you are ready to copy files over. You can copy files to the vtape itself for further organization, or to combine them with files from another machine.  Or, you can drag them directly to the tape.

If you drag them to the vtape, they are copied to the internal drive of the Prime-Cache, but not to the tape. This becomes a staging area as I mentioned. When you’re ready you can drag your vtape files directly onto the tape icon and the files will transfer. Another benefit to using this method is that you can make multiple copies of the same tape. Once one tape is done, you put a new one in and drag the files over again. In doing this you can have one on-site and one off-site copy of your data.

In our example I decided to just drag my flies directly to the tape icon, thus I went directly to the tape and bypassed the vtape drive. Well, that’s not totally true. The device still uses the drive to cache files and make sure there is always a steady stream of data for the LTO as it’s recording. But this is more of a rotating cache that once it’s done will not occupy any space on the vtape.

In our example I copied 5 gigs of files directly to the tape, in about 5 minutes. Not too shabby for coping files over a network. And remember, this tape holds 160x more data!

Remember those old Avid drives that were about 50lbs a piece and held only 9 gigs of data and cost $5,000 each!? Now you can fit 800 gigs on a tape that’s roughly the size of a wallet (albeit a fat wallet).

On the vtape you will now see a text file called TransferLog. This file has a list of every file transferred as well as a final status. This is the most important part of the log, found at the end. It confirms that your transfer was successful. If it was not, it will give you details as to what files were the problem and in most cases what the problem seemed to be.

Your file transfer can be monitored more actively through the web interface to the Prime-Cache drive. The list at the bottom will scroll as files are copied.

Now that the tape is completed, the next step is to create a catalog of what’s on it. By doing so you will have the option of later searching for files that you may want to retrieve without having the tape loaded. Once you find what you want, you just insert the proper tape and copy it back to your computer. While the Prime Cache does keep a catalog file of it’s own so that you can do this same function internally, I prefer to keep that information under my own control and accessible even if the drive is off-line. There’s also the added benefit of getting a lot more then a file list in your catalog, as you’ll see next. Other metadata is key.

For this part we use a program called CDFinder. Don’t let the name throw you, it’s not for just CD’s, it’s for any mountable disk, volume or folder – attached locally or over the network. We started using this when we backed everything up to hard drives and it has always served us well. We keep the CDFinder catalog file network accessible, so no matter where the program is launched it’s reading and writing to the same file.

This is the easy part. With your vtape mounted and the tape that you just copied to visible, you can either drag and drop the tape to the CDFinder icon, or from within the program select the tape directly.

During the catalog process, you have options as to how deep to catalog, what file types to skip, the ability to create thumbnail previews of images and so on. By default we scan everything and create thumbnails of images.

This 5 gig backup only took 2-3 minutes to catalog, and that includes making all of the thumbnail images. If you turn off some of those options it goes even faster.

Here is what you end up with when you’re done.

The new catalog, by default, will assume the name of the tape. This is where having your own naming convention is important. You are able to change the name though if needed.

Here you can see some of the icons that were created. These are actually part of the catalog file, and not being read form the tape itself. In fact, when this screen shot was taken the tape was no longer in the drive. It’s one of the advantages of using CDFinder over the Prime Cache internal Catalog.

You also have the ability to sort your catalogs into different folders. As shown here we have a few different client folders, as well as folders for our current tape library and our older hard drive library.

Now with the catalog complete, you can put your tape on the shelf and start your own archive library. Make sure to properly name the tape to reflect the same name that it had in the finder.

Performance

So for me there are two big questions in regards to performance. By far the first one is can I rely on The Prime-Cache to safely protect my data. The second question is, how long does it take to fill an 800 gig tape.

For the first question I can tell you based on my own experience that it’s virtually fail-safe. Not only is the LTO standard very robust with a 30 year shelf life, but it has a great track record and really strong road-map for the future. I also appreciate the fact that the standard is “open”, and not owned by any single company.

As to the second question, in our experience it takes roughly a minute per gig during backup. The number of files and sizes do make a difference. A single file that’s 1 gig in size will transfer a lot faster then 100 smaller files that total 1 gig in size. To fill a tape it usually takes anywhere from 6-9 hours. Obviously the speed of your machine, hard drive system and network will also play into this. We’re pretty fast on all 3 of those so I’m guessing we’re close to best case scenario.

The Prime Cache hardware/software is very solid as well. Even going back to when Quantum was making the device, the engineering team has always been very open to feedback and have worked hard to make changes that users have requested. This really shows in the maturity of this product. While it is a first release from Cache-A, they learned a lot from the early problems that Quantum had and avoided the same pitfalls. The code for the Cache-A device is rewritten from the ground up and only uses the Quantum code necessary to read the LTO-3 tapes. Cache-A has really taken this product from being some weekend hobby at Quantum to making it their flagship product, front and center.

Cost of Ownership
This is not a cheap device, but it’s also not a “dumb” LTO drive. With a standard LTO you have to not only buy the drive but also have a compute host and software to manage your backups. With the Cache-A line of archive appliances, you get all of this in a single box and more. There’s also something very nice about not having to call different companies if you have a problem, and then have them each point to the other. Cache-A makes the hardware and software, and supports it well.

One of the best reasons to choose this device is that it’s available to every computer on your network. With just a LTO drive, you may find yourself moving it from machine to machine as you need to do backups, and it because it’s such a pain you’re less likely to stay current maintaining your archive library.

So all things considered, the $7,999 price tag is not so bad for what you get. Especially if you factor in piece of mind.

Tape prices are really cheap. A 800 gig tape is going for $49.29 at Amazon.com. While that’s only slightly cheaper then a 1TB hard drive, what you’re really paying for is long-term peace of mind. You won’t get that from your dusty hard drives much past 5 years.

But even with the cost involved, the drive could be a money maker for you. How?

We have managed to turn this into a new stream of revenue. Since purchasing the drive nearly 2 years ago we’ve been charging for every project backed up. The result is over time the drive is slowly being paid for, and in about 6-12 more months it will be making us a profit. So it’s safe to say that buying this device has tuned out to be a good investment, that’s about to start paying dividends.

But it’s no longer just editing projects that need to get backed up. Now it’s P2 media, XDCam and RED footage as well. Once the project is over we also offer to create a library tape of all of the original footage. In some cases we will make more then one copy so that not only will our client have the footage, but their client as well.

Before buying any piece of gear for my business I always ask myself if it will be considered overhead, or money generating. The Cache-A Archive Appliance can definitely make you money. If it’s not, you might be leaving money on the table.

The Manual
The 75 page PDF manual is very detailed and easy to read. It does a good job of explaining how the device works, what a typical work flow might be, explaining what the vtape is in detail, use of the web interface and so on. I found that while it wasn’t exactly a page turner, I did enjoy reading it. But then again, I’m a bit of a manual geek. There’s just something about a new manual that makes me excited. I know, very sad. So I’ve been told.

One of the interesting features that I did not cover is the ability to hook up external devices (think USB hard drives or memory sticks) and also backup those devices through the web interface. I played around with it a bit, but did not use it enough to include in this review.

Changes Still Needed
As much as I like this device, it’s not perfect. But the small issues I have with it can be fixed over time with software upgrades. I have to admit it took me pouring through my review notes to even come up with these.

In the web interface there is a button called “Item”. Intuitively it’s hard to know what it’s for exactly. It’s actually a contextual menu based on whatever is selected to the right of it (Current Tape, VTAPE, or Catalog). But it doesn’t make immediate sense and I’m sure there’s a better way to do this, or at least a better name for it.

In that contextual menu, two of the options are Eject and Erase. But does Eject need to be right next to Erase? This just seems like a bad idea.

Erasing the vtape can take an unusually long time. You can erase it in the finder or through the web interface, but in both cases it just takes a long time (in one case it was several hours for just under 800 gigs of files). If you choose to perform this function in the web browser, there’s no way to tell if/when it’s done since there is no status. You just assume that it’s running in the background.

To be fair, I have not tested this since the last software upgrade so it’s possible that it’s better now. I know they were aware of it and working on it.

By default the system ships with a DHCP network setup, meaning you should be able to just plug it in and let it find an open space on the network. They recommend that you leave it in this mode, but we found it was better to just give it a hard IP address. There were a few times that it picked a IP address that was already in use, thus causing a network conflict. I can not say for sure that it was the fault of the Prime-Cache, only that we’ve never had this issue before. Using the web interface we easily give it a static number and all was fine after that. Generally speaking, anything that can be thought of as a “server” is something I like to have on a locked down IP anyway.

My biggest complaint is that the backwards support for LTO-3 (reading previous archive tapes) is not yet implemented in the software (thus untested). For anybody that already has a history with the device this makes upgrading pointless until this is corrected. We have nearly 100 tapes that will not work with the new drive, which means we can’t let go of our current drive until this feature is implemented. They hope to get it out before the end of this year, but there’s no guarantee. If you’re totally new to this device, then you won’t really care about this feature.

And as I already mentioned, the eject dialog is a bit confusing. Having the word “Delete” appear does grab your attention, but since the dialog presents a conflicting message it’s a bit unnerving, even if it is harmless. But again, an easy fix that I would expect to see in a future release.

The SuiteTake
At the risk of repeating myself yet again, you can not underestimate the importance of a solid reliable archive. If it’s important enough to save, it’s important enough to do it right. Especially if you’re thinking about billing your clients for this service. For all the years that we did HD backups we never charged clients for one main reason. I didn’t want the responsibility of dealing with files that were lost due to a drive failure. So we did it as a courtesy and guaranteed nothing.

New features are due to be added in October with their 1.1 software release. Some of the major features include Tape Spanning, Automatic VTAPE file removal option, Pro-Cache RAID 0/1, and Pro-Cache ExpressCard Support.

With the Cache-A series of Archive Appliances based on the LTO standard, you can reliably backup all of your files and know that they’re safe. Period. And with the new devices from Cache-A your data can be read back from a Standard LTO-4 drive as well, so you’re not locked into the A-Series drives for retrieval.