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Table 2-1: Maximum Sustained Read and Write: MB/sec and IOPS
Access Type VRFEM1xxxGP Units
Sequential Read, 128K block size Up to 500 MB/s
Sequential Write, 128K block size Up to 500 MB/s
Random Read, 4K block size Up to 60,000 IOPS
Random Write, 4K block size Up to 20,000 IOPS
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 (LBA’s). Measurements are
performed on a full drive (all LBA’s have valid content).
4. Performance may vary by NAND type and host.
5. Refer to Application Note AN0006 for Viking SSD Benchmarking Methodology.
2.2 Timing
Table 2-2: Timing Specifications
Average Latency or Timing
Time to Erase (ATA Secure Erase)
Time to Erase (ATA Secure Erase with flash erase)
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 (LBA’s). Measurements are
performed on a full drive (all LBA’s have valid content
2.2.1 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.
Table 2-3: STANDBY IMMEDIATE Timings
STANDBY IMMEDIATE to WE completed
