Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 575

Volume Collections Panel, Field, Description, Volume distribution, Snapshot Compression

Page 575 highlights

Field Members Volume distribution RAID preference Load balancing Distribution of volume across members Shared space with template Unshared space Free space Snapshot Compression Expanded Size Compressed Size Space Savings Description Lists any members associated to the snapshot. These members have snapshot space reserved. Displays one of the following configurations: • Automatic - Indicates that the RAID configuration is the same as that of the pool containing the volume. • RAID 50 - Recommended situation: Applications requiring an optimal combination of performance, availability, and capacity. • RAID 10 - Recommended situation: Applications and workloads requiring the highest levels of I/O performance for random writes. • RAID 6 - Recommended situation: I/O performance for random writes is not a key factor. Applications requiring the highest level of data protection and reliability. • RAID 6-Accelerated - Recommended situation: Optimal for the use of solid state drives for critical data. • RAID 5 - Dell recommends against using RAID 5 for any business-critical data, although it might be required for certain applications, depending on performance and data availability requirements. RAID 5 carries higher risks of encountering an uncorrectable drive error during a rebuild, and therefore does not offer optimal data protection. RAID 5 can be configured only with the CLI. Indicates whether the volume is enabled or disabled for load balancing. If enabled, load balancing identifies the RAID level that provides the best performance for a volume and stores volume data on pool members with that RAID level, if such members are available. Lists the group members across which the volume and its snapshots are spread (Thin clone volumes only) Space that the thin clone shares with the template volume (Thin clone volumes only) Space that is storing data unique to the thin clone (Thin clone volumes only) Unused capacity in the thin clone The space required if all compressed snapshots in that volume were rehydrated. The space currently being used by all compressed snapshots in that volume. The amount of space saved by compression; the difference between the Expanded Size and the Compressed Size. Volume Collections Panel Table 539. Volume Collections Panel Field Total volume collections Collection or volume Storage pool Reported size Description Number of volume collections on the group Name of the volume collection and the list of the volumes in that collection Name of the storage pool where the volume collection resides Capacity seen by iSCSI initiators that represents the maximum amount of space that the group can allocate to the volume or volume collectio Reference: GUI Panels, Wizards, and Dialog Boxes 575

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Field
Description
Members
Lists any members associated to the snapshot. These members have snapshot space
reserved.
Volume distribution
RAID preference
Displays one of the following
configurations:
Automatic — Indicates that the RAID
configuration
is the same as that of the pool
containing the volume.
RAID 50 — Recommended situation: Applications requiring an optimal combination of
performance, availability, and capacity.
RAID 10 — Recommended situation: Applications and workloads requiring the highest
levels of I/O performance for random writes.
RAID 6 — Recommended situation: I/O performance for random writes is not a key
factor. Applications requiring the highest level of data protection and reliability.
RAID 6-Accelerated — Recommended situation: Optimal for the use of solid state
drives for critical data.
RAID 5 — Dell recommends against using RAID 5 for any business-critical data,
although it might be required for certain applications, depending on performance and
data availability requirements. RAID 5 carries higher risks of encountering an
uncorrectable drive error during a rebuild, and therefore does not
offer
optimal data
protection. RAID 5 can be
configured
only with the CLI.
Load balancing
Indicates whether the volume is enabled or disabled for load balancing. If enabled, load
balancing
identifies
the RAID level that provides the best performance for a volume and
stores volume data on pool members with that RAID level, if such members are available.
Distribution of volume across
members
Lists the group members across which the volume and its snapshots are spread
Shared space with template
(Thin clone volumes only) Space that the thin clone shares with the template volume
Unshared space
(Thin clone volumes only) Space that is storing data unique to the thin clone
Free space
(Thin clone volumes only) Unused capacity in the thin clone
Snapshot Compression
Expanded Size
The space required if all compressed snapshots in that volume were rehydrated.
Compressed Size
The space currently being used by all compressed snapshots in that volume.
Space Savings
The amount of space saved by compression; the
difference
between the Expanded Size
and the Compressed Size.
Volume Collections Panel
Table 539. Volume Collections Panel
Field
Description
Total volume collections
Number of volume collections on the group
Collection or volume
Name of the volume collection and the list of the volumes in that collection
Storage pool
Name of the storage pool where the volume collection resides
Reported size
Capacity seen by iSCSI initiators that represents the maximum amount of space that the
group can allocate to the volume or volume collectio
Reference: GUI Panels, Wizards, and Dialog Boxes
575