Viking ATA-100 Datasheet Page 12

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Datasheet 06/04/2012
PSFEM2XXXGXXXX Viking Technology
Revision A2 Page 12 of 46
www.vikingtechnology.com
Table 2-2: Maximum Sustained Read and Write Bandwidth
Access Type MB/s
Sequential Read, 128K Up to 520
Sequential Write, 128K Up to 520
Notes:
1. Performance measured using IOmeter 08 with queue depth set to 32.
2. Write Cache enabled.
3. Refer to Application Note AN0006 for Viking SSD Benchmarking Methodology.
Table 2-3: Random Read and Write Input/Output Operations per Second
(IOPS)
Access Type IOPS
Read, 4K 60,000
Write, 4K 60,000
Notes:
1. Performance measured using Iometer 08 with queue depth set to 32.
2. Write Cache enabled.
3. Random IOPS cover the entire range of legal logical block addresses (LBAs). Measurements are
performed on a full drive (all LBAs have valid content).
4. Performance may vary by NAND type and host.
5. Refer to Application Note AN0006 for Viking SSD Benchmarking Methodology.
2.3 Timing
Table 2-4: Timing Specifications
Type Average Latency (ms)
Power On to Ready <1
Reset to Ready <2
Sleep to Ready <1
Command to DRQ <1
Time to Erase (ATA Secure Erase) 4 seconds
Time to Erase (ATA Secure Erase with flash erase) ~ 1 GB/second
Notes:
1. Based on MLC
2. Device measured using Drivemaster.
3. Sector Read/Write latency measured up to 2048 block transfers (512B/sector = 1 Block)
4. Queue depth set to 32 for NCQ
5. Sequential IOPS cover the entire range of legal logical block addresses (LBAs). Measurements are
performed on a full drive (all LBAs have valid content
2.3.1 STANDBY IMMEDIATE Command
The Power On to Ready time assumes a proper shutdown (power removal
preceded by STANDBY IMMEDIATE command. A STANDBY IMMEDIATE
before power down always performs a graceful shutdown and does not require
the use of the hold-up circuit. Note that SMART attribute 174 "Unexpected
Power Loss" records the number of non-graceful power cycle events.
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