The loss of compression is only true if you compress AFTER you encrypt. (I
believe that's what you were talking about, but just thought I'd clarify for
anyone who didn't realize that.)
AND you lose more than speed, BTW. You also lose capacity, so you'll need
50-100% more tapes than you did before you enabled encryption.
All of the hardware solutions of which I am aware (Decru, Crossroads, TS1120,
LTO-4, T10000) compress before encrypting, so they don't have this issue.
---
W. Curtis Preston
Backup Blog @ www.backupcentral.com
VP Data Protection, GlassHouse Technologies
-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Siobhán Ellis
Sent: Friday, January 11, 2008 12:18 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Encrpyption
NOTE:
You LOOSE any compression capabilities, so your drives will run slower.
Siobhan
On 12/1/08 4:00 AM, "Terry Lemons" <lemons_terry AT EMC DOT COM> wrote:
> Yes, you would. If the saveset is encrypted during backup, it stays
> encrypted when it is cloned.
>
> I was trying to speak to the case where the saveset was NOT encrypted
> during backup.
>
> Sorry for the confusion.
>
> tl
>
> ________________________________
>
> From: Michael.Leone AT pha.phila DOT gov [mailto:Michael.Leone AT pha.phila
> DOT gov]
> Sent: Friday, January 11, 2008 11:57 AM
> To: EMC NetWorker discussion; Lemons, Terry
> Cc: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: Re: [Networker] Encrpyption
>
>
>
> EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU> wrote on
> 01/10/2008 04:35:00 PM:
>
>> Hi Bruce
>>
>> I'll start the reply, and others will correct and amplify.
>>
>> There are at least three tape drives that offer encryption today:
>>
>> - IBM LTO4
>> - IBM TS1120 (aka 03592 E05)
>> - STK T10000A
>>
>> All of these require a supporting environment to provide key
>> management, drive configuration, etc. For the TS1120 and T10000A at
>> least, this adds tens of thousands of dollars to the cost of the
>> drive itself, in my experience.
>>
>> NetWorker supports encryption at the client only, during backup. So
>> NetWorker doesn't provide the ability to encrypt during the clone
> operation.
>
> I'm confused ... if I have a storage node with an AFTD drvice (disk),
> and I have a clone job set ... wouldn't NetWorker encrypt the data to
> the drive of the storage node. And if it then clones that drive onto
> tape, don't I have an encrypted saveset on tape (because the saveset on
> disk was encrypted)?
>
>
>
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>
Siobhán
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