HP XP P9500 Storage - Manual (Page 229)

data to be accessed in the event that one or more of the drives within the RAID group are not
available. The RAID level of a RAID group determines the number of data drives and parity drives
and how the data is “striped” across the drives. For RAID1, user data is duplicated within the
RAID group, so there is no parity data for RAID1 RAID groups.
A RAID group can also be called an array group or a parity group.
RAID level The type of RAID implementation. RAID levels include RAID0, RAID1, RAID2, RAID3, RAID4,
RAID5, and RAID6.
RCU See remote control unit (RCU) .
RCU target port A fibre-channel port that is configured to receive remote I/Os from an initiator port on another
storage system.
remote control unit
(RCU) A storage system at a secondary or remote site that is configured to receive remote I/Os from
one or more storage systems at the primary or main site.
remote copy See remote replication.
resync resynchronize
RMI Remote Method Invocation
S-VOL See secondary volume (S-VOL) or source volume (S-VOL) . When used for "secondary volume",
"S-VOL" is only seen in the earlier version of the Remote Web Console GUI (still in use).
SAS serial-attached SCSI
secondary volume
(S-VOL) The volume in a copy pair that is the copy of the original data on the primary volume (P-VOL).
The following HP products use the term “secondary volume”: Fast Snap, Snapshot, Business Copy,
Continuous Access Synchronous, Continuous Access Journal, Continuous Access Journal Z, and
External Storage Access Manager.
See also primary volume (P-VOL) .
service information
message (SIM) SIMs are generated by an XP P9500 storage system when it detects an error or service
requirement. SIMs are reported to hosts and displayed on Remote Web Console.
Service Processor The computer in an XP P9500 storage system that hosts the Remote Web Console software and
is used to configure and maintain the storage system.
severity level Applies to service information messages (SIMs) and Remote Web Console error codes.
SFP small form-factor pluggable
shredding See volume shredding.
SIM See service information message
size Generally refers to the storage capacity of a memory module or cache. Not usually used for
storage of data on disk or flash drives.
SM shared memory
SMTP simple mail transfer protocol
snapshot A point-in-time virtual copy of a Snapshot primary volume (P-VOL). The snapshot is maintained
when the P-VOL is updated by storing pre-updated data (snapshot data) in a data pool.
SNMP simple network management protocol
SOM See system option mode
source volume
(S-VOL) Used only in the earlier version of the Remote Web Console GUI (still in use), this is the volume
in a mainframe copy pair that contains the original data that is duplicated on the target volume
(T-VOL). The following HP products use the term source volume: Business Copy Z, Dataset
Replication for Mainframe, and Compatible FlashCopy.
In the current version of the GUI, "target volume" and "T-VOL" are replaced with "primary volume".
See also source volume (S-VOL) .
space Generally refers to the data storage capacity of a disk drive or flash drive.
SRM Storage Replication Manager
SSD solid-state drive. Also called flash drive.
229