Promise Technology Pegasus R4i, Product Manual, Page: 105 / 163

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Promise Technology Pegasus R4i
• Logical Drive ID – LD0, LD1, etc.
• Alias – If assigned
• Array ID
– ID number of the disk array where this
logical drive was created
• RAID Level – Set when the logical drive was
created
• Operational Status – OK, Critical, or Offline
• Capacity – Data capacity of the logical drive
• Number of Axles
– For RAID 10, 2 axles
• Physical Capacity – Data capacity of the physical
drives
• Number of Physical Drives – The number of
physical drives in the disk array
• Stripe size – Set at logical drive creation
• Read Policy
– ReadCache, ReadAhead, or None *
• Sector size – Set at logical drive creation
• Write Policy – WriteThru or WriteBack *
• Current Write Policy
– May change from
WriteBack to WriteThru under certain conditions.
• Preferred Controller ID – Not applicable
• Tolerable Number of Dead Drives Per Axle –
Number of physical drives that can fail without the
logical drive going offline
• Synchronized – A new logical drive shows
“ No ” until synchronizing is completed. See
“Synchronization” on page 59
• Parity Pace
– Pertains to some RAID levels
• • WWN – Worldwide Number, a unique identifier
assigned to this logical drive
• • RAID 5 & 6 Algorithm – Pertains to RAID 5 and 6
• • Codec Scheme – Pertains to some RAID levels
• •
Serial No
– Serial number assigned to this logical
drive
Logical Drive information displays, including:
Logical Drive Information