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[How to] ResScan using too much disk space
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justMongo Offline

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Post: #1
ResScan using too much disk space
My patient file now contains 145 files. All but 3 are RLK suffix files.
They start at 2655KB and grow to 23305KB. It looks like an RLK file is created for every day that high rate data is included in a download.
example: I DL 3 days of data and it asks about "overwrite" -- I say discard. So, I get 3 new RLK files dated for the day of download.

They now occupy nearly 2GB on my HDD. Has anyone tried to archive or toss any of the older files without losing history?

Am I doing something wrong?

It's not that I do not have plenty of disk space; but, I do a weekly backup to my NAS; and these files are now a significant part of the transfer.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
08-02-2014 07:25 PM
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PaytonA Offline
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Machine: ResMed S9 VPAP Auto
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Location: Orange County,California

Post: #2
RE: ResScan using too much disk space
The S9 files are apparently larger than the S8 files. Each of my S8 files is 48KB. I guess it is probably the flow rate data that makes the larger file
08-02-2014 08:24 PM
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justMongo Offline

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Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

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Sex: Male
Location: Калифорния

Post: #3
RE: ResScan using too much disk space
(08-02-2014 08:24 PM)PaytonA Wrote:  The S9 files are apparently larger than the S8 files. Each of my S8 files is 48KB. I guess it is probably the flow rate data that makes the larger file

I would assume so. I might just try moving all but the last 30 days files to another directory; then open the Program and see if I still have all the data access I have before.

I am wondering if instead of discard, I should be clicking overwrite when DL'ing for the SD card.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
08-02-2014 08:57 PM
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zonk Offline

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Machine: A10 AutoSet
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CPAP Software: ResScan

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Post: #4
RE: ResScan using too much disk space
(08-02-2014 08:57 PM)justMongo Wrote:  I am wondering if instead of discard, I should be clicking overwrite when DL'ing for the SD card.
I think choosing "overwrite", you would loose flow data on days older than 7 days but not 100% sure
08-02-2014 09:10 PM
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justMongo Offline

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Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
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CPAP Software: Other Software

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Post: #5
RE: ResScan using too much disk space
(08-02-2014 09:10 PM)zonk Wrote:  
(08-02-2014 08:57 PM)justMongo Wrote:  I am wondering if instead of discard, I should be clicking overwrite when DL'ing for the SD card.
I think choosing "overwrite", you would loose flow data on days older than 7 days but not 100% sure

That's what I thought.
Das ist, was ich dachte.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
08-02-2014 09:44 PM
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zonk Offline

Advisory Members

Posts: 7,908
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Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
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CPAP Pressure: 9/13
CPAP Software: ResScan

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Sex: Male
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Post: #6
RE: ResScan using too much disk space
(08-02-2014 09:44 PM)justMongo Wrote:  That's what I thought.
Das ist, was ich dachte.
هذا ما ظننت Rolling laugh
08-02-2014 10:12 PM
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vsheline Offline

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Machine: S9 VPAP Adapt (USA Model# 36007, not better 36037 or 36067)
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Post: #7
RE: ResScan using too much disk space
(08-02-2014 08:57 PM)justMongo Wrote:  
(08-02-2014 08:24 PM)PaytonA Wrote:  ... I guess it is probably the flow rate data that makes the larger file

I would assume so.
...
I am wondering if instead of discard, I should be clicking overwrite when DL'ing for the SD card.

The S9 VPAP machines record two "High Rate" (20 samples per second, I think) data streams ("Flow" and "High Rate Pressure", plus the other slower (1 or 2 samples per second, I think) data streams.

My computer is down for repair these days, so I can't check how large my downloaded files are in ResScan.

I don't know how much data is needed for each sample, but it is likely that at least several bytes of data is used per sample, especially if the data contains time stamps and other identifiers for each sample.

If the data format per sample required 32 bytes, for example, this would result in large data files, and the file size for a 10 hour session would be:
32 bytes/sample times 20 samples/sec times 3600 sec/hour times 10 hrs , or about 23MB per 10 hr "High Rate" file, which would be about the same as the largest size file you mentioned.

I think the size of the files downloaded for a night would not be affected by selecting Overwrite versus Discard. If I wanted to find out, I would create a new or dummy patient and experiment as a new patient, so I would not risk losing any of my previously downloaded high rate data.

I have intermittently lost high rate data from my ResScan Patient folder by selecting Overwrite instead of Discard. I say "intermittently" because sometimes data is lost but other times it is not. A few months ago, using ResScan 4.1 or 4.2, I mistakenly selected Overwrite and did not notice any data missing from previous weeks or months, but I did lose most of my previously downloaded detailed data (or maybe just high rate data) when I selected Discard a year or two ago.

Within the past couple months at least one forum member has reported losing some previously downloaded data when Overwrite was selected. So I will continue to select only Discard.

Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment. The Advisory Member group provides advice and suggestions to Apnea Board administrators and staff on matters concerning Apnea Board operation and administrative policies - not on matters concerning treatment for Sleep Apnea. I think it is now too late to change the name of the group but I think Voting Member group would perhaps have been a more descriptive name for the group.
(This post was last modified: 08-03-2014 03:57 PM by vsheline.)
08-03-2014 09:40 AM
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