No subject


Mon Feb 22 11:50:28 CST 2010


It takes roughly 73 clock cycles on a Windows or Linux server or about
87 clock cycles on UNIX server to perform MSEO compression/encryption
per BYTE of data backed up. Backing up 100 MB/sec of data through a
Solaris media server requires 8.7 GHz of CPU processing for MSEO alone,
plus whatever processing is needed for other tasks. To move 200 MB/sec
through the media server would require 17.4 GHz of CPU for MSEO.

So it's a very cpu intensive process. You would probably require a large
multicore process system depending on your throughput requirements

Regards,
Tal

-----Original Message-----
From: judy_hinchcliffe at administaff.com
[mailto:judy_hinchcliffe at administaff.com]=20
Sent: 02 March 2010 15:20
To: jpiszcz at lucidpixels.com; Shekel Tal
Cc: kc.on.the.job at gmail.com; veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Sun/StorageTek based LTO4 encryption

Thanks why I went for kms (tape drive encryption) no overhead on the
media server or the clients

-----Original Message-----
From: Justin Piszcz [mailto:jpiszcz at lucidpixels.com]=20
Sent: Tuesday, March 02, 2010 8:57 AM
To: Shekel Tal
Cc: Judy Hinchcliffe; kc.on.the.job at gmail.com;
veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Sun/StorageTek based LTO4 encryption

Hi,

I have read others' reviews on MSEO-- from what I understand it will peg

the CPU and reduce throughput dramatically to high-speed drives.

Has anyone not seen that?

Justin.

On Tue, 2 Mar 2010, Shekel Tal wrote:

> Okay, thanks for the information.
>
> I have also been looking at NetBackup Media Server Encryption.
> It looks quite neat, compresses before encryption and has very nice
key
> management which is a big tick in the box for me.
>
> The only caveat is that is software based and has fairly heavy host
CPU
> requirement.
>
> Regards,
> Tal
>
>
> -----Original Message-----
> From: judy_hinchcliffe at administaff.com
> [mailto:judy_hinchcliffe at administaff.com]
> Sent: 02 March 2010 14:42
> To: Shekel Tal; jpiszcz at lucidpixels.com; kc.on.the.job at gmail.com
> Cc: veritas-bu at mailman.eng.auburn.edu
> Subject: RE: [Veritas-bu] Sun/StorageTek based LTO4 encryption
>
> I am now using kms, and because the tape drive does the compression
and
> the tape drive does the encryption, I have not noticed any loss in
> compression yet ( only have had it running for about 1 week) that was
> something I was also concerned about.  You have to compress before you
> encrypt, and as far as I could find out the tape drive knows that.
>
>
> -----Original Message-----
> From: veritas-bu-bounces at mailman.eng.auburn.edu
> [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Shekel
> Tal
> Sent: Tuesday, March 02, 2010 7:39 AM
> To: Justin Piszcz; Kevin C
> Cc: veritas-bu at mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] Sun/StorageTek based LTO4 encryption
>
> 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?
>
> Regards,
> Tal
>
> -----Original Message-----
> From: veritas-bu-bounces at mailman.eng.auburn.edu
> [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Justin
> Piszcz
> Sent: 01 March 2010 21:26
> To: Kevin C
> Cc: veritas-bu at mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] Sun/StorageTek based LTO4 encryption
>
>
>
> On Mon, 1 Mar 2010, Kevin C wrote:
>
>> Sorry if this topic is been discussed before.
>>
>> Looking for members who have implemented LTO4 based encryption on
>> Sun/StorageTek/Oracle platforms, any useful
> comments/journeys/guidance. We
>> are on HP LTO4 drives with SL500/SL3000 libraries. From what I
> understand,
>> this pretty much limits us to the StorageTek Crypto Key Management
> System w/
>> KMA appliances at each library site. The other option, today, is
> NetBackup's
>> KMS software.
>>
>> Thank you.
>>
>
> I have using the IBM LTO-4 drives with STK libraries, works great, as
> long
> the firmware is version 7BG2, I have seen the drive reset itself if
the
> firmware is any other version (more recent ones).  Also using NBU &
KMS.
> It works good, note you can only have 2 volume pools that use
> encryption.
>
> Justin.
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