Varying the SL8500 Offline

Vary SL8500 components offline to ACSLS before they are powered off, if they are inoperative, and before you open an SL8500 access door. This notifies ACSLS that they are unavailable. Once they are available, vary them back online.

Use ACSLS to vary SL8500 components offline, not SL Console

Vary SL8500 components (ACSs, LSMs, and CAPs) offline to ACSLS, not the SL Console.

ACSLS allows outstanding requests to complete before taking components offline, unless it is a vary offline force. The SL Console has no knowledge of outstanding requests to ACSLS.

Varying components offline using SL Console may cause requests in progress to fail.

When to vary SL8500 components offline to ACSLS

This section discusses when to vary SL8500 components offline to ACSLS.

Before Opening the Access Door

Before opening the SL8500 access door, vary the ACS or all four LSMs offline.

For a standalone SL8500, vary the ACS offline using the following command:
```
vary acs acs_id offline
```
For a SL8500 connected through PTPs, vary all four LSMs (in the SL8500 whose access door will be opened) offline using the following command four times (once for each of the four LSMs):
```
vary lsm lsm_id offline
```
Note:
If any CAPs in the SL8500 are in automatic mode, you must:

Set them to manual mode before opening the access door.
Set them back to automatic mode after you close the access door and the SL8500 comes back online.

If a CAP is inoperative

If the CAP is inoperative, vary it offline using the following command:

vary cap cap_id offline

When closing the Service Safety Door

Whenever replacing hardware requires using the Service Safety Door, it is advisable to keep that Service Safety Door closed for the minimum amount of time possible. The Service Safety Door blocks other hardware components (elevators, CAPs, and cells) to which access may be required for completing specific requests.

Before closing the Service Safety Door on either the left or right-side of the SL8500, vary the elevator on that side offline through the SL Console.

After the Service Safety Door is opened, vary the elevator on that side back online through the SL Console.
When the Service Safety Door is closed on the right-side, it will block access to the CAP.
Before closing the Service Safety Door on the right-side of the SL8500, vary the CAP offline through ACSLS.
After the Service Safety Door is opened, vary the CAP online through ACSLS.

Note:
When the SL8500 Service Safety Door is closed to separate a service bay from the rest of the library, the CSE can open the access door on that side without taking the LSM or ACS offline.

When using the Service Safety Door do not use these ACSLS commands and utilities

There are some ACSLS commands and utilities that should not be in progress or initiated when the Service Safety Door is being used. These commands, are:

When the Service Safety Door is closed on either side, do not use the following utilities:

acsss_config
config (config drives is OK)

When the Service Safety Door is closed on the right (CAP) side, do not use the following commands:

enter
eject
set cap mode auto <cap_id>

When the Service Safety Door is closed on the right (CAP) side, the following commands can be used, but special considerations apply:

audit

The audit command can be used. However, if there is a need to eject cartridges as a result of the audit (because the audit encounters duplicates or unreadable labels), the audit will complete and update the ACSLS database, but the cartridges will not be ejected.
vary acs and vary lsm

These commands will succeed, but messages will be displayed on cmd_proc and the Event Log reporting CAP failures and inoperative CAPs.