Hardware manual

Group Administration Glossary
Glossary–4
device-specific module (DSM)
(Host Integration Tools) A plug-in for Microsoft Windows device driver module. For
multipath implementation on
PS Series arrays, you use EqualLogic Multipath I/O DSM in conjunction with Microsoft MPIO. It provides the
EHCMservice.exe user mode Windows service, and the eqldsm.sys kernel mode driver.
discovery
Requesting from the target portal a list of a
ccessible iSCSI targets (for example, volumes or snapshots) making
those targets available for use.
DSM
See device-specific module (DSM).
eqlvdshwpriv
(hardware) A VDS service that runs on Windows and is specific to
Equa
lLogic PS Series Group operations.
eqlvss
(hardware) A VSS service that runs on Windows and is specific to EqualLogic PS Series Group operations.
failback
(Group
Manager) Replicating only the volume
changes (delta) from the secondary group to the primary group and
then returning to original replication configuration.
failback baseline
Date and time at which the data in the failbac
k snapshot is identical to the data represented by the most recent
replica.
failback replica set
(Group Manager) Temporary replica set created by demoting a volume as part of a failback operation. You can also
create failback thin clone replica sets. S
ee demote.
failback snapshot (baseline)
(Group Manager) A snapshot on the primary group containing the same data as the most rece
nt complete replica,
defining the failback baseline. A failback snapshot enables you to fail back to the primary group by replicating only
the changes made to the recovery volume.
fan tray
(hardware) See cooling module.
global Smart Copy access
(Auto-Snapshot Manager) Refers to access controls tha
t
allow other computers to access (import) Smart Copies
created on a particular computer.
global verification task
(Auto-Snapshot Manager) A scheduled background activity that yo
u can run from any designated user account.
The Global Verification Task performs Checksum Verification and Soft Recovery processing on Exchange Smart
Copies.
global verification window
(Auto-Snapshot Manager) A core time period in which ASM can pe
rform Checksum Verification and Soft
Recovery on Smart Copies of Microsoft Exchange Storage Groups and mailbox databases. You typically specify a
range of time that corresponds with a period of low system usage (off-peak times) to make best use of server
resources.
group
See PS Series group.