Product specifications

Firmware Functionality Specifications
A-5
Host LUN geometry:
user configurable
default geometry
(Solaris OSes)
1. Capacity <64GB: Head=63, Sector=32,
Cylinder=? (depends on capacity)
2. 64GB<capacity<128GB:Head=64, Sector=64,
Cylinder=? (depends on capacity)
3. 128GB<capacity<256GB: Head=127,
Sector=64, Cylinder=? (depends on capacity)
4. 256GB<capacity<512GB: Head=127,
Sector=127, Cylinder=?
5. 512GB<capacity<1TB: Head=255, Sector=64,
Cylinder=? (depends on capacity)
6. 1TB<capacity: Head=225, Sector=225,
Cylinder=? (depends on capacity)
7. For capacity larger than 1TB, please refer to
Chapter 9
User configurable
geometry range:
Sector: 32, 64, 127, 255 or Variable
Head: 64, 127, 255 or Variable
Cylinder: <1024, <32784,<65536 or Variable
Drive motor spin-up
Supported. The controller will send spin-up (start
unit) command to each drive at the 4 sec. intervals.
Drive-side tagged
command queuing
Supported. User adjustable up to 128 for each
drive
Host-side maximum
queued I/O count
User adjustable up to 1024
Maximum
concurrent host LUN
connection
User adjustable up to 64
Number of tags
reserved for each
Host-LUN
connection
User adjustable up to 256
Controller shutdown
Flushes cached contents upon the detection of
critical conditions, e.g., a high temperature
condition persists for a long time
Drive I/O timeout
User adjustable
I/O channel
diagnostics
Supported; please contact your dealer for more
details
Maximum Drive
Response Time
(Guaranteed Latency
I/O)
User adjustable from 160 to 960ms. If a disk drive
fails to return data on read requests before the
timeout value is exceeded, the array immediately
generates data from the parity data and the other
members of a logical drive.
Drive roaming
Supported; array configuration stored on disk
drives
A.3 Caching Operation:
Write-back cache
Supported.
Write-through cache
Supported.