Thursday, September 14, 2006

Back-Ups

What is the best way to get more space on the hard drive? I'm currently using Iomega for the external back up. I was told that the machine runs comfortably with about 20 GB, but I have a hard time keeping it this high, as I use the I-Cat for every patient every day.

Also, does anyone know (legally) if we're responsible for keeping the patient's raw data, or just the reports - and for how long?

Thanks - Jeannie Herriott

8 Comments:

Blogger Matt Kroona said...

Here's what I do.
1) After I am done working up a patient, I delete the raw data and the scouts. All that remains is the reconstructed data.
2) I save the reports and the reconstructed data in a folder on my desktop. When I have accumulated enough folders, I burn them to a DVD and erase them from the desktop.
3) I installed a second hard drive (D) and made a mirror image of the C drive so that if/when my C drive fails, I can boot to my D drive and I'm back up and running. I regularly copy my patient folders from the desktop on my C drive to the desktop on my D drive. When I burn the DVD, I delete those folders from my C & D drives.
4) I have had my i-Cat for almost 2 years and I currently have over 650 patients in my i-Cat data base. I have a 110gb drive that has used 70gb with 40gb free. My best guess is that I have at least another year before I start getting low on space. When that happens, I plan on installing a new larger D drive, making a mirror copy of the C to the new D, designate the D drive as the C drive, put in another new D drive and I should be good for several more years. By that point, hard drives should be around $100 for 500gb.

I would stongly suggest that you keep some copy of the reconstructed data and the reports. And I would also suggest that it NOT be on the main computer hard drive since they do fail.

Sorry for the long answer. Hope this helps.

2:36 PM  
Blogger Matt Kroona said...

I just realized that if you are using your i-Cat on EVERY patient, you probably have thousands of patients in your data base so my plan may not work for you. I would suggest though that you dump the raw data. Once you've done the reconstruction, the raw data is prety much useless.

2:52 PM  
Blogger Amnon said...

Hi Friends,
I'm also burning the Recon. on the patients CD.
So our patients are a walking backup.
We also erase all scouts & raw data immediately.
See you all soon in Monterey
Amnon

12:46 PM  
Blogger Craig Dial said...

Jeannie,

As a lab, you probably aren’t responsible for patient data. If you provide prints, this should be sufficient. However, you should keep a digital copy of your reports and the reconstruction data. We use a 4 terabyte mirrored drive array. But there are other ways of data back up as Matt and Amnon are doing.

2:29 PM  
Blogger Eric Iwamoto said...

Ideally, it is best to keep the raw data. Why? The minute after you delete the raw data, it kicks starts Murphy's Law: Anything that can go wrong, will go wrong! In the infinitesimal event that you require another reconstruction, you will need the raw data. There really is no reason to delete the raw data until your hard drive reaches near maximum capacity.

Currently, my i-CAT computer has two (the second is the internal back-up) 500GB SATA hard drives. If that is not sufficient for your needs, Fry's Electronic's sells a Seagate 750GB 7200rpm SATA hard drive for $339(sale price). If you decide to use the huge 750 drives, make sure you have an empty PCI slot for the SATA Host controller card (approximately $35)which supports two independent SATA ports.

Diane from Yamamoto Radiography backs up to a custom server in her office. Other i-CAT users are deleting their older (from as little as one day up to two years)patient raw data files while retaining the smaller reconstucted patient files, PDF files, DICOM multi-files for 3rd party software and DICOM single files for i-CAT Vision. As Matt Kroona, Craig Dial and others have attested in this blog, it is always safest to have redundancy.

You can actually make your own external hard drive fairly inexpensively by going to your local electronics superstore and purchasing an internal hard drive (with the size that meets your requirements)and an external hard drive case. The wiring is fairly straightforward and you would use the mirroring software that is included with the hard drive.

Since most of the dental imaging centers are radiography not radiology, we are obligated to provide the referring doctor with all the images requested. When imaging and photography were analog, we did not keep any copies, thus it became the referring doctors' responsibility to maintain the records. With the advent of digital imaging, we have the ability to easily save these images. Your office can offer the service of being able to provide digital backup copies for a small fee or use it as a free benefit for sending patients to your imaging center.

10:37 PM  
Blogger Amnon said...

Eric,
The Dicom's are huge files!
If you have the Recon. you can always reproduce Dicom ?

11:46 PM  
Blogger devery said...

Has anyone considered the warranty issue when you alter the original box?

8:54 PM  
Blogger Samantha Irving said...

Devery is right - there are warranty implications to opening up your PC. I'm not seeing all those posts from people that did...

Another idea - Archiving. This physically MOVES the study off your C Drive. You could archive off to a network drive. Only bit of warning is to NOT change the name of the drive you archive off too. When you "unarchive" it will get angered if it can't find the original path. So if you end up with network drives getting renamed, make sure the drive you archive to has a drive letter and a name that doesn't change.

I don't know that archiving is in the manual. I wrote up something on how to archive, email me if you'd like me to send it to you:
irvings@imagingsciences.com

8:45 PM  

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