Thanks for the info Justin
Definitely would like to test in our environment and compare . . .  very
interesting

-----Original Message-----
From: Justin Piszcz [mailto:jpiszcz AT lucidpixels DOT com] 
Sent: 02 March 2010 14:56
To: Shekel Tal
Cc: Kevin C; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Sun/StorageTek based LTO4 encryption

Hi,

A mixture of DB/FS data.

Justin.

On Tue, 2 Mar 2010, Shekel Tal wrote:

> Well that looks pretty good
> Not sure if you are comfortable sharing info like this but what kind
of
> data does that represent?
>
> Normal User File data?
> Database data?
> Media Files?
>
>
> -----Original Message-----
> From: Justin Piszcz [mailto:jpiszcz AT lucidpixels DOT com]
> Sent: 02 March 2010 14:49
> To: Shekel Tal
> Cc: Kevin C; veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Sun/StorageTek based LTO4 encryption
>
>
>
> On Tue, 2 Mar 2010, Shekel Tal wrote:
>
>> I have also been looking at this as an option.
>> One of the considerations is the effect encryption has on
compression.
>>
>> I have heard you loose the ability to compress effectively when using
>> compression.
>>
>> Have you noticed an effect on your tape drive compression when using
>> tape drive based encryption?
> Yes.
>
> LTO-4 TAPE = 800GB
>
> IBM LTO-4 ENCRYPTED (RATIO = ~1.5:1)
> ABCD25   3     67   02/17/2010 20:00  02/23/2010 00:00   hcart
> 1188618163     0
>               MPX   03/26/2010 00:00        N/A         FULL
ENCRYPTION
>
> ABCD36   3    101   02/18/2010 00:12  03/02/2010 00:00   hcart
> 1239789810     0
>               MPX   04/02/2010 00:00        N/A         FULL
ENCRYPTION
>
> IBM LTO-4 NO ENCRYPTION (RATIO = ~3.1:1)
> ABCD49   2   1144   02/23/2010 02:43  02/26/2010 01:32   hcart
> 2451541654     0
>               MPX   03/19/2010 02:49        N/A         FULL
>
> ABCD50   2   1350   02/26/2010 01:32  03/01/2010 01:05   hcart
> 2377975447     0
>               MPX   03/22/2010 02:05        N/A         FULL
>
> ABCD51   2   1275   02/24/2010 20:01  02/27/2010 10:40   hcart
> 2575741349     0
>               MPX   03/20/2010 11:40        N/A         FULL
>
> Justin.
>
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