On Tue, Sep 04, 2001 at 03:57:18PM -0400, Blake, Delroy wrote:
I would avoid AIT tape drives. I've heard several times AIT
tape drive has switches you need to turn on/off based on
OS connected too. In mixed environment with SAN it becomes
unclear for me how AIT would be working. I could be wrong.
If anyone else have experience could you share please????
I can't say I am happy with DLT ( DLT7000 to be correct )
Too many bad tapes, slow loading, positioning. You have to duplicate
if you want to have you data safe.
STK robots are OK, but could be expensive, the support is quite expensive too
which is available in our area as 24x7 only. But.... at least it works.
I will never buy SAN<->SCSI bridges again from STK. They are relabelled
CrossRoads, 24x7 support only and it costs more than any other vendor
could offer for the same kind of equipment. The support is too far from
excellence, or what we could expect for this kind of money.
Previous expirience with ATL and their support pushed us to switch to
STK. It was old kind robots ATL 6/176, the last of ours
was made in 1998 and we never ever got it working.
ATL used PC parts inside, I especially liked idea of using regular
PC power supplies for power up tape drives.
> You have to state what drive techology you want to use. As an example if you
> choose fromt Technologies you might have a matrix as such.
>
> DLT ADIC,ATL,STK
> AIT2 ADIC,Spectra Logic,Qualstar
> DTF ADIC,SONY
> 9840 STK
> 3590 ADIC,IBM,STK
>
> You also should look at what type of capicty you will need.
>
> we using the following formula
>
>
> Total Capacity = (((V + ((0.25 * V) * 5)) * R) - ((R / 4) * V)) + (V * M)
>
> Where:
>
> V = the total amount of data to be backed up.
>
> R = Number of weeks that non-monthend data should be kept for before being
> recycled.
>
> M = Number of months that monthend data should be kept on-line in the silo.
>
>
>
> All disk drives are rated in MTBF
> That's mean time between failures.
> The question is not if your disk will crash but when.
> Got BACKUP?
>
>
>
> -----Original Message-----
> From: Kratunis, Anthony [mailto:akratunis AT tiaa-cref DOT org]
> Sent: Tuesday, September 04, 2001 12:43 PM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: [Veritas-bu] Buying a new Robot
>
>
> I have finally been given a budget to purchase our first real robot tape
> drive library.
> I know there are probably horror stories for every piece of hardware ever
> built, but
>
> If you have strong feelings either for or against a particular tape library
> and care to share them, I would appreciate any insights. Please be specific
> in the reasons
> thanks very much
> anthony kratunis
>
>
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--
----
Andrew Shinkarev
Network Systems Specialist
Abbott Laboratories
(847) 9387559
shinkara AT pprd.abbott DOT com
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