On Thu, Nov 30, 2000 at 03:32:22PM -0600, John_Wang AT enron DOT net spake unto
the multitudes:
>
> Seems to be a pretty good library though the 18 slot mail slot doesn't have a
> detachable carrier. Would've been nice if all 18 cartridges could be pulled
> from the drawer and swapped with another carrier but that doesn't seem to be
> the
> case.
Yes. :(
> Also the drawer doesn't seem to have any locks on it so it is possible
> to pull the drawer out before the robot is really prepared to let you have it
> and you wind up with an annoying alarm sounding off.
>
The drawer does have locks -- I've never seen this problem. Maybe you should
take it up with ADIC? The padlock LED is for just this purpose.
> Although the picker seems to move very fast, there's a noticeable time delay
> between when I issue a command and when the arm starts to move. Also, I'm
> not
> conviced that speed is really an issue with an automation product i.e.: any
> speed is better than paging me at night for a tape change.
>
When you put 14TB/week through one, and are injecting/ejecting on a 3hour
rotation, it helps. :)
> The unit has a marketing mode where it just moves the arm around and looks
> busy
> during which the entire unit is offline and unusable. Management and
> particularly sales types tend to leave the unit in marketing mode whenever
> they
> can which is really annoying cause then no production can occur. It
> would've
> been nice if an actual request could interrupt marketing mode to service the
> request.
>
My solution was to never tell them the library could do that. ;-)
> The keys for the front door is different from the keys for the back door. A
> bit unnecessary in my opinion.
>
Yes and no. We have operators on-site 24x7, who I want to have access to the
cabinet -- "I have 20 tapes coming back from ARCUS in an hour for an emergency
restore, and don't want to come in - go dump them in any empty slot".
Unfortunately, the 'element move' feature is slow and hard to explain to
Tier-2, so that's not an option. At the same time, I don't want them anywhere
near my FCR's or SCSI busses, just in case -- all tucked away with the key in
my desk.
> When power is dropped, the arm free falls to the bottom with the only drag
> being
> that of the pulleys. It would've been nice if the arm had been better
> counter
> weighted or had some kind of brake to support it's weight in the power off
> situation, at least nicer than hearing that unsettling whine followed by a
> thunk.
Are you using the 'shutdown' procedure from the panel, or just pulling power
after the JB is quieted?
--
"Any man page that includes the words "USE AT YOUR OWN RISK. BEWARE OF DOG.
SLIPPERY WHEN WET" means trouble" - Michael Lucas
Joshua Fielden, Senior Systems Administrator and Backups Team Lead
eXcite@Home, Inc. jfielden AT excitecorp DOT com 650-556-3316
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